I'm talking about SOME effectiveness, outside of DM fiat, other than in combat.
Feats do allow some sure, but EVERY class gets those. Fighters get a few more but, if they want to keep up in their supposed best pillar (combat) they generally get used there.
As for some ideas? Well, I like expanding fighter maneuvers outside of combat (applied to skills etc.) as provided by Tasha's. But expanding the HD would be nice so it's not severely limited. The playtest looks like it has already started down this road, will see where they go with it.