TT is turning into a mini SR.
At this point Twisted Treelines is becoming too much like Summoner's Rift. With the addition of the new out turrets, weak laners can simple play it safe and wait until 15 or 20 minutes into the game before taking any action. This in anti-antithetical to the way 3's were played before the change; back then, if you wanted farm you had to put yourself in a dangerous position or let the enemy push your wave and forfeit your control over your jungle because the other team would then have a man advantage. Additionally, this change has killed the ability, at least in the gold elo, for a dominant laner to gank the other lane once they've pushed theirs to the turret unless the enemy's other laner is out of position. This has forced a massive shift in the meta toward squishy late game mages and adcs because the window to shut them down in this environment has been closed and they can reliably get to the mid game without being shat on by champions such as riven, renekton, or j4; sivir and anivia have an almost 60% win rate according to METAsrc, a win rate like this is unheard of in 5's.
Historically, the primary appeal of the pre-OT TT was the odd and mostly bruiser focused meta is had developed which encouraged long drawn out early to mid-game fights that happened frequently. Today, TT favors less early fighting and prefers to sit patiently until the 15 minute mark where the game finally begins and at that point the game becomes quite snowbally with the first team to get an advantage typically winning the game soon after.
I propose that Riot undo the addition of the outer turrets so that TT can stop being a smaller version of SR.