AT2 lvl 200 ...cant go higher

[Alice]

The level 200 limit in <AT3 is intentional. I have an AT2 alt of my own at level 200, and for that stage in the game, a level 200 is absolutely sufficient. Ascending to AT3 gives access to inferno difficulty tiers, and also allows for your character to gain inferno levels. It's the design of the "Inferno" gameplay mode.

I don't think that removing this restriction would positively impact gameplay.