Thomas Shey
Legend
The multiclass system in 4E is something that I think there can be some legitimate discussion on. I didn't see it used very often and I don't think it was really updated (outside of Gestalt characters). I think the "archetypes" from PF2 are a good development from that initial idea.
I used it for the one character I played in 4e (a cleric with multiclass investment in wizard), but I will agree it was pretty underwhelming overall, and if you wanted to go that route, PF2e's approach seems much superior (if sometimes overly punitive if Free Archetype isn't in use).