started playing the mod and im enjoying it. and i have some suggestion for the mod and something i noticed.
first of all, i think the earth plate should activate the sand force ability.
after that, if its not too much complicate to program, i think that holding a splash plate while having the ability stormdrain could also restore hp when hit by a water move (and if the holder have the ability water absorb, it could also have the effect of raising the sp. atk stats by 1), this could also work for fire flash and lighting rod/ volt absorb (maybe also throw ice body in that list)
i also noticed that my torterra, in his alternated form, still has his shell armor ability and not the solid rock ability like you put on the alternated pokedex. though i think it might be the result of forcing an ability by using the AMB debugmenu, even if it is a turtwig
(tho i have to say that shell armor+stone plate work pretty well on torterra)
edit 2: so i used 2 ability capsule on it and that fixed the problem