As long as the class retains the core abilities (FD, invuln, grip, drains, slow, etc) I'm pretty open to experimentation theme-wise.
Interested to see what they do with this new "collectable abilities" mechanic. Hopefully it gives the class some meaningful choices and isn't just a gimmick.
Also hoping they add a significant mana sustain mechanic or make the bulk of our DPS occur through weapon attacks rather than spells. Make spells occasional use like situational utility or CC. The other two Knights are really struggling mana-wise. We cannot be a "high-damage tank" if our ability to provide consistent DPS is kneecapped by mana.