D&D (2024) The more I think about it, the least I like class groups.

[Vael]

I don't hate class groups, I thought Roles in 4e were a great innovation for that edition, but some of the in-built flavour of the Mage and Priest catagories do impose limits. The existing 13 (12 + Artificer) work in existing categories, but if more classes were to be added in OneDnD ... like a Warlord or Psion ... they aren't clean fits.