N8Ball
Explorer
I've had the idea to make feats for each class that give you additional power in that class slightly beyond what a normal feat might give, but 'expend' your multiclass credit, and cannot be taken by Hybrids. Essentially, "Class specialization" feats.
The idea is to make not multiclassing an option that isn't immediately suboptimal (because even for a largely-single-class character, splash multiclassing is extremely good.)
I like this idea. It encourages focusing on a single class and could add some breadth to it. It makes your cleric extra clericky. Perhaps this could be an option to add another at-will to your list of powers. I'd love to see some means of doing that for certain classes that have a good selection of at-wills.
Ooooooh nice!
This is even better than my idea for getting another At-will. It gives up something valuable in exchange for something else sweet. Incidentally, this would also solve the issue of Eldritch Strike being a "human only" At-will for Warlocks.