We need different types of item blacklists, sort of like ItemRestrict (plugin)... Like ownership, placing, etc.

Well, the idea is that you can unpack the items to craft with. So for example, you can ban TNT but still allow any recipes that use it. As soon as you try to add granularity, the mob becomes a lot more complex and bypasses will creep in.

With Forge it is also (practically) impossible to prevent specific inventory manipulations & crafting.

Do you have any particular functionality you need/want, and why?

Thing is, with some mods, like block placers, players can put their items in there and place em down, as if a chunk loader was banned.

Any blockplacers in 1.9+ should use (fake) players and use the forge hook when doing any world interactions, if they are not, they are doing weird things and should probably be informed of the inconsistency.

Ah. I'll give it a shot on my public server