Generally, I think the higher tier combat gets the more likely it would come down to luck and hyper effective sneak attack power sets, so yes, I tend to agree with you, hiding profiles would take some of the skill out of the game. Tbh, I'd be more interested in seeing the far opposite, where both opponents have had time to study each other. That would probably lead to the ultimate game of skill, or at least as skillful as it can be without equalising the power sets.