I've spent the past few days re-reading a thread in my PbP saga (Base Camp, at viewforum.php?f=50) that featured a magic-addicted magus who was overly fond of Ring Duration spells. Before he left the saga, there was some discussion of his using Ring spells to providing Magical Lighting to all of the covenant's labs. This raises a question:
Is there a plausible in-game reason why any lab would not have Magical Lighting? Even a small CrIg spont (Base 2 for candlelight, +1 for Touch, +2 for Ring) cast repeatedly would work, and, while creating permanent rings isn't trivial, the work in question can be done by grogs, as it doesn't require magic. The same goes for Magical Heating, which should be equally easy.
I'm inclined to assume that magical lighting is standard for all labs, and to remove or modify all of the lighting and heating Virtues and Flaws, including Subterranean. The Excessive Lighting version of Magical Lighting would still make sense, in a modified form as a Free Virtue (maybe +1 Im, -1 Aesthetics, which is basically the difference between Excessive Lighting and Superior Lighting). Non-magical Lighting could actually be a free Flaw, for those fond of candles (say, +1 Upkeep, -1 Im, +1 Ig, or +2 Upkeep, +2 Ig for an Excessive version).
An alternate approach would be to say that Magical Lighting and Heating take space, like the mundane kind, or possibly to rule that they take space unless the light/heat comes from invested devices, since invested devices don't need rings around them, and can even be attached directly to a wall or ceiling. I don't think that really works, though, because it's pretty easy to draw a ring on a ceiling.
Any thoughts on this? Am I missing something about how easy this is?