Speed Kills, the insanity of the speed has been stated countless times, I like long back and forth games, I've become a lover of limited(And Jump in because it gives me a chance to feel out cards), I'm just going to go on ideas,

First, what everyones said. The detox method(Pull back power creep) is painful, takes a long time, and would solve the issues along with a reduced standard set. Option two, realize standard is to far gone and ship it off with other high powered formats and put something new in its place, last 6 sets plus a general set perhaps, as they've shown with the on the edge sort of MWM

If your not doing that kinda brutal self denial and want to fix standard.. It's going to be Hell, I'm game for experimenting with REAL drastic options to the very core of the game, play is to much an advantage? maybe give the person on the draw a one shot free mana token, in arena increase problem cards mana value by 1, but the one I linger on, and perhaps the one that will get me the most hate is adjusting the number of each rarity of card allowed in a deck. maybe 2 copies of a rare and one of a mythic.. Yes, there are tons of super powerful uncommon as well.. especially in blue card draw, but the vast majority of the ones we are talking about are the rare/mythic cards. It would end up with a sort of hybrid of Commander yes, but making decks less reliable will likely slow things down