I would love if argonians had a natural perk of not just waterbreathing but during a short burst of sprinting were able to run across water (just during the burst of sprinting) like what a jesus lizard can. Would be so awesome in my opinion but then you all might disagree ^_^.
EDIT: Obviously just realizing myself that items would effect this if it were to be realistic at all due to stick some heavy armour on a jesus lizard I'd be pretty certain it couldn't run across water.
As long as speechcraft perks effectively bring back streetwise and etiquette as separate abilities, I will be happy. May as well fire haggling, child at heart and animal friend in their as well, in one form or another.