Mark/Dash Tweak Ideas.....

So. I like the concept of mark/dash. It allows tanks and melees to be able to jump in and DO something. It can create AMAZING plays. I mean Annie-snowball-tibbers is a great engage. It makes ARAM more competent as a game-play mode. If I like it so much, why do I wanna tweak it? Simple. It's slightly buffing the tanks and melees too much. It's very hard to win against a team that is near full tank when you don't have a tank buster champ. I don't want it nerfed to the ground, but maybe it should have either a longer cooldown or shorter range. Emphasis on the OR. I don't think it should have both nerfed. IMO, it would be a little bit more bearable at like 50 sec. It makes it short enough to use often, but gives the enemy team a window to counterplay in the event that they are being out engaged by the other team. It's not something I think HAS to happen, It's still fun regardless. Just wanted to input my two cents. :)