Horwath
Legend
I have zero problems with classless being an option for D&D.look you start down that path we just end up classless and that is not an upgrade merely a side grade.
Just pick 2 or 3 feat(ure)s every level and make your own character.
OFC, there can always be prebuild "kits" that players can take if they do not want a custom character.
only thing important for CR and encounter building is level of characters and what abilities can be taken at which level.