I realize this is just an engine test, but it would definitely be nice to be able to 'shop' for your talent points while dead.
This also may be less of an issue once the trees are filled out, balanced, and completed, and once I learn them all, but the fast paced action leaves me little time to consider what builds to go after. Especially if I wanted to point my build in a different direction to react to another player's tactics in game, it would sure be nice to spend 30 seconds staring at that screen to ponder - even if I can't spend any points.