Designed so someone doesn't castBountiful Feast on the English Isle for 8 pawns of Vis.
My point is that the scope of our plans to cast Bountiful Feast is not unreasonable. It isn't even grand. So there should be no required size increase.
THAT is how you should measure sizes. "Well, it's a big individual, so you will probably need at least +1 Size to affect it." Or, "We want to cover a huge mountaintop on BOTH sides of the regio with the Aegis, so we'll need to increase the size of our casting."
Mythic Europe should not get you involved in conversations that involve square footage and volume measurements. ESPECIALLY to discuss something like the size of the boundary needed to cover our fields for Bountiful Feast, because we've never sat down and measured them. I mean, okay, it was sort of fun to calculate the area of the Aegis, because we had a map and had drawn some lines on it. But now we're talking about really hypothetical things here, and its a gorram spell designed to enhance the fields of a covenant. So the size of the boundary should be enough to enhance the fields of a covenant.
Are we the size of a covenant? Why, yes, yes we are. So the spell should work as written.
It isn't the boundary of the covenant, but boundary of a field. If ME is doing a Vis to silver conversion, then it is important to determine the yield. If it is being done to produce stellar wines for flavor, then it can be hand waved.
Okay, I agree with you on that point in principle. However, the vis-to-silver conversion that we're talking about is the conversion of a MRB spell to savings using the formula published in Covenants for that specific purpose.
Nor is Korvin learning the spell specifically to suit the needs of Mons Electi. He had it already. So he's going to determine a boundary that fits the confines of the spell, yielding the standard vis-to-silver conversion.
So, we're talking about two purposes here. First, the default, RAW conversion of a ritual spell into covenant savings. Second, we're theorizing that repeated use of The Bountiful Feast would be a good way to develop the wine industry we've discussed previously (and possibly, by extension, the beekeeping/honeycraft/waxcraft stuff). But right now, they're expenditures that we're reducing, just as we reduce the cost of provisions by having a specialist vintner and beekeeper.
If anything, maybe he needs to cast it several times, once for the base reduction in expenditures, and once for the income-generating fields. But he can cast his spell for some kind of effect, and I see no reason why that effect shouldn't be the one outlined in RAW.
Ooer, is there a map of the covenant grounds somewhere?
The formulas is described as a very rough rule of thumb. So if ME is doing this to supplement food production, sure fine, done. If the idea is to create an income source, it will have to be much more meticulously detailed and it will be rigidly controlled.
Makes sense to me. If we're actually creating an income source, some stories better be happening around that. I pass this buck on to Jebrick, for I am already fixating on Rashid and his Spidersilk Weaving workshop.
Which is why I said I could cast it several times. Once for the vineyards ( income source) and once for the Covenant food source ( lowering supplies). At the cost of 8 herbum vis per year, I think we can handle it.
So, I got into a position to look at the spell. Wow, that spell is kind of a mess, and includes a +3 size enhancement, so the effective size is +4, and goes to a circle with a diameter of 6 miles...
WOOT!! We cover the entire hill 
Aren't legacy spells fun?
grumble
I seriously question the validity of Base 1 including a +3 Size guideline that applies to non-Individual targets. But whatever.
Does Korvin need to cast the spell twice?
Oh, and Korvin, have you updated the Magi Planner to show when you're going through Apollodorus's stuff? It's not clear to me if I still need to do your Princeps duty.
I would not need to cast it twice if we have boundaries for both the vineyard and normal crops set out. I could just hit the entire Covenant but I think that would cause 1 point of warping for everyone per year ( I may be wrong there).
I have not updated Magi Planer as I was going to do it during the season of Precept duties. If Korvin does not finish it then Jacques, who follows Korvin, can. I'm taking it as the Precepts duty to catalog Apollodorus' stuff for the Covenant.
**For some reason, Magi Planner does not show up on my Google drive/docs. Please make sure it is shared with me. jebrick@gmail.com
Warping only affects targets of the magic. People aren't a target of the magic. Technically, it is the plants within that are the target.
I'm leaning towards saying that warping will accrue in the plants over time, because the seeds will have warping, and add additional year over year...
which i totally agree on. We can mitigate the crop warping by buying seeds from outside ( selling our warped seeds) every few years but the grape vines : 
I, or Urich, could design the spell to have a smaller boundary although just +2 size ( which takes it to lvl25) might not be big enough but could cover just one field at a time.
FTFY
Two problems with that. Continuous magical effect. And the +3 size for boundary is free, baked into the guideline and doesn't actually affect the final level of the spell.
I think it does. Base 3 spell + 1 touch +4 year = lvl 20 spell. It gets to 35 by adding +3 size. If it is just +1 size then it is lvl 25. But the continuous effect would gain the warping in any case.
It's Base 1, +1 Touch, +4 Year, +4 Bound, +1 size (for a total size of +4, but +3 of that is free from the guideline). Getting the spell up to level five, take Year or Bound (I'll say Year) +4 and add it to the base, for a full first magnitude total. Touch adds 1 magnitude, Boundary adds 4 more, and size adds another one for +6 magnitudes, making the final spell level 35th level.