Hmm, I don't know. I can think of a few combos that would be much better already simply due to multiclassing... And I've never really engaged with it deeply before. Someone who has played D&D for a few years could surely improve the current damage caps in a breeze. However, that is mostly due to how weak some core classes currently are.
There's not much more than damage we can get out of it at level 5, though, is there? Niche cases aside, it doesn't seem that cool in practice with only 5 levels. You're essentially still just the one core class with some other functions sprinkled in. I can't say I see much if any particulary interesting roleplay potential in that yet. Unless, you want to pull a Wyll and suck at half the things you're supposedly good at.
(...With a bonus of being unable to explain how you got your multiclass levels, except "felt like it". That's worse than Wyll.)
I'd prefer fewer half baked functions implemented, even if some halfbaked roleplay might come out of it. You usually need at least 5 levels in your core class before you can get anywhere. It's simply makes no sense to implement yet. (Not that it wouldn't fix the damage of the classes that suck, currently...)
