Not the person you responded to
Originally Posted by Blackheifer
This feels very subjective in regards to a distinction. Can you provide me with some examples of BG3 Home Brew that makes all the characters feel the same? I think disengage BA is the only one I can think of. What other examples of Homebrew do you mean?
- All characters can cast any spell a scroll, making every character a wizard
- All characters benefit from high ground/backstab (whereas in other games e.g., DOSII only certain classes benefitted from high ground; and backstab is typically a rogue thing)
- Many enemies have a free disengage and tend to target low-AC characters, which removes the role of frontline tanky characters. This turns every party member into more of a frontline warrior
- The "Help" action restores HP to downed allies; this makes every character a mini-cleric. Furthermore, the abundance of healing food removes the need for a cleric
- Everyone can shove as bonus action, whereas in 5e this is limited to a shield-wielder with a dedicated feat.
- And ofc disengage makes every character more of a rogue/monk
Originally Posted by Blackheifer
What balancing techniques do you feel would fix the overpowered Solasta characters?
Many Solasta characters would be made less OP if feats were tweaked to be less powerful. But this would still allow each character to retain a sense of personality based on their class-feat combo.

As you mentioned, the Concentration feat should just provide advantage. The Follow-up should just provide a single BA attack (In my latest playthrough, that's what the feat said it did).

For the mage class, maybe the ability should instead allow you to reroll 1's (you must use the new result) on evocation spells' damage dice?