In theory, yes. But realistically, you need to pick all active abilities and no passives for it to become an issue. For example, here is a screenshot of Swashbuckler Eder when you pick all 19 active skills. Though I'm sure there are some builds that have more keys than a piano. 🙂 Also, I left the main active ability lovers (spellcasters) unchanged, because I found it far more convenient when spells are organized by levels, like in vanilla. P.S. I'm experimenting with moving part of ability bar to a second row (a new row above, where usually hotkeys are), but I don't like how it looks so far. Maybe I'll just move the buttons for AI, weapon swap, and items belt there, to make the first row a bit shorter.