I agree 100% here. DND and indeed roleplaying games are not about "fun gimmicks", but playing characters that feel special in their own way, able to do things that few or none of the others can do. So, you can solve fights and quests by doing things in different ways, for sure, but it's based on your characters unique abilities and skills, not everyone's mutual ability to climb high, stand behind an opponent, throw and explode barrels or push people.
