I think Dota is in a great place. So many of my recent games have been epic hour long clashes where (almost) every hero plays an important role.
However, I do feel that Dota is well overdue for some kind of big change. It's been stagnating for a while and it deserves bigger and better content or changes to keep things fresh.
Some of the "freshest" updates have been: Reborn (7.0), shrines, outposts, lvl 30, neutral items and various map changes. Obviously a lot of these changes have been totally overhauled along the way but ultimately they made for a much better game in the end. But we haven't had any updates like that in a very long time. We are overdue for some fatass changes around here.
Here are some of my (probably bad) ideas:
-Let players zoom the camera out just one more notch (or lower all the terrain by one level)
-Bring back junglers/trilane
-More frequent neutral item rotations
-More opportunities to deny heroes
-Better ward system
I want to hear your ideas regardless of how simple or farfetched they are!