The Thematic Trifecta (Advance Elementals & Their costs)

[Magik]

Dipping is already discouraged by way of applications and mentorship. And, besides, dipping does allow for more variety in characters.

It's not the best example, but team druid/witch have already faceplanted hard on their would-be builds due to semi-mandatory buy-ins and then it being too expensive to also tag into other things, for instance.