Smiting Blue should give HP not MP

With smite becoming far more valuable as a ganking, unique buffing, and clearing mechanic, to get some mana back for smiting blue seems very underwhelming and unrealistic as junglers are stuck between saving smite for an actually useful effect, or smiting blue to clear it faster and end with slightly higher hp. The difficulty of camps has gone much higher and if you start red and end with blue, you are at a huge hp disadvantage from starting blue to red. It clearly sets one route over another which shuts down any decision making and interactive playing that Riot has been so hyped about. Also, the mana seems redundant as the blue buff itself gives you mana regen and thereby filling up ur mana pool anyways.