Achangel62 - are you saying that these "factions" did want the Reds gone but not as quickly or fully as it happened in Changes? It seems counter-intuitive. If you want them gone at all then you want them wiped out. Why would the Black Council or whoever want to only kill them slowly or cripple them? Same with Mab or Vadderung (who benefited from the destruction of the Reds).

The gnomes are a neat idea. I had a similar idea with a chloromancer once, who animates houseplants to open doors and windows (imagine a bonsai ent). Maybe the gnomes are actual gnomes who are working for the sorcerer. He provides them with an item that can turn them into painted terracotta figures, so they can be sold as regular garden gnomes and go on their burglary tour.

The idea of a clinic is pretty cool, but I am kind of missing the downside. If the people are ageing drastically during that process, they will probably get a bad reputation, after all, who is vain enough to want to get thin only to look old? Your writeup now sounds like that doesn't happen and is actually a win-win situation. A drastic downside for the patients should be involved to get the players to investigate. Maybe the Steven King route, so the transformation won't stop, until the people are thin as skeletons and their whole life force is used up. Or the Dr Who route, that the fat is transformed into something else.

Uh...is this directed at me?

Either way, that's exactly what Human Form is. If you can use your powers without huge obvious shapeshifting, you have Human Guise, if you need to turn into a huge monster (or a tiger) to access them, then you take Human Form...that's what Human Form does.