Everyone has their on take on it. Id rather have a new edition be a better, more streamlined, edited version of the previous edition, than a completely different game. If I want a completely different game, I'll buy a new game. But I just cant get into Ninja-Wizard,undead half-elf-half ogre. Nothing against it, play what you like, its your game.
I also dont like speed factors, segments, measuring every bit of space for 'attacks of opportunity' ,etc.
Not a fan of the "video game" feel of 4th.
If 5th edition is close to 1st edition or 2nd, a variation there of, or a "better" version. Id definitely pick it up.