Not sure this is being done that often, as I’ve played a while and haven’t seen too many big changes.
But one thing I would like to see would be small nerfs and buffs to base damage or multipliers of generic abilities from patch to patch. Some skills (like vengeance) are too far ahead for what they offer (extreme damage, idol support, 60% dmg mitigation) as opposed to other skills like Rive which could use some buffs. Same with stuff like shatterstrike and mana strike, which in my opinion are very lackluster at the moment and could use some buffs. Other obvious things like lightning blast / glacier being toned down slightly, and so on. Smite is another one that I think could use a buff to damage scaling, etc.
I know that it wouldn’t take that much time to make small changes to damage values from patch to patch as needed and would still be contributing to overall balance in the long term.