Yeah, and they're not _that_ hard to make - I like the idea of 'spend an action point to get a MC encounter power back' for a common ability, I think you could probably do an at-will instead of the level 11 'feature' as another option...
But yeah, I think we'll be swimming in multiclass paragon paths much like we were in prestige classes... but at least they're easier to make and balance (I think)
'Arcane Trickster' paragon path
Feature: +1d6 damage with combat advantage
Action: When you spend an action point, you turn invisible until the start of your next turn.
11th encounter
12th utility
Feature: If you cast a close spell, you are concealed until the start of your next turn.
20th daily'
etc.