I feel faster games are a good thing. They just need to be balanced out.
So for awhile now the game has become decided or won around 20 minutes. To me, that's not a terrible thing. I actually prefer it. The older days of 40 minute games are great if you have nothing going on and can play for hours a day. But personally, I'd rather get 3-5 games in 2 hours than only 2. Everytime I log in I have to think ok, I have to do X in X hours. If it takes 4 minutes to find a game, 5 minutes in champ select, no one dodges, everyone has a decent connection and the game loads in a minute, I'm already ten minutes invest into this. Then back in the longer game days you had to expect the game could reach close to an hour. So that's about an hour of not answering the door, phone, helping GF, BF, mom, dad, dog has to pee, whatever.
So onto my main point, I feel the game needs a overhaul to support these shorter games. And that might be the real solution we need because it seems Riot is in favor of shorter games as well. I feel one big issue is the champ pool is currently who snowballs faster and easier. Late game champs are a thing of the past because there is no late game.
So I propose: If the standard gp5 and xp was increased we would see more champs come back into play. Supports could hit 18 (probably still after other lanes by a few levels). With more gp5 we can remove snowballing things like first blood and tower as well as all the crazy damage in keystones. Champions can go back to scaling how they should. Overtime throughout gold and items. Not crazy random damage spikes. With more champions reaching their "late game" in these shorter games safer, the game can be tuned down on all the crazy early game damage while still being an average of 20-30 minute games.
TL:DR If shorter games are to remain, make them shorter for something other than snowballing things like first blood/tower, keystones, and unnecessary early game damage. Make them short because champions hit late game sooner through gold and xp evenly across the field. I want strategy. Not luck or a gamble who got what champ or objective first (except nexus lol)