VNM Stone upgrading (regular areas). Stop upgrading?
Would it be possible to "lock" your abyssite with the NPC Assai Nybaem in Ru'Lude? You designed them to upgrade with the idea of people actually killing the bosses - but majority of the time this is just a detrimental side effect of doing Trials of the Magian. I wouldn't mind you making it so that nothing could drop from the VNMs spawned while under this effect.
I just find it annoying to have to either get a T2 on an alternate account and log/warp them before it dies so the abyssite doesn't upgrade, or the other annoying method of just getting a T3 pop and then getting another T2.
It's nothing major. But not everyone has access to alternate accounts. As it currently stands its actually detrimental to get a T2 abyssite with your own character for fear of it upgrading mid trial - you just have to hope your group has enough T2 abyssites to last all the mobs you need or for you to use a friends abyssite. (Either way its annoying)
Summary: Method of stopping T2/T3 Abyssite from upgrading when doing TOM.