Treeline changes...
I only play treeline and rarely ARAM so these changes have hit me pretty hard. The entire point of TT in my opinion is fast dangerous play. TT is all about ganking IMO. This patch seems determined to destroy any chance of ganking. Free anti-stealth for all and an extra turret really reduces the junglers ability to gank.
Trinkets
A free anti-stealth trinket is a horrible idea, especially when there are no other trinket choices. This addition basically says "shaco, eve, twitch, akali, and kha we do not like your style of play on TT. Where is the anti-tank trinket or the anti-mage trinket. Nope just one trinket and thats anti-stealth/gank. Either give trinket options or dont give a trinket at all. This way people have to plan out which trinkets they take which also gives the poor random stealther possible a chance that the entire enemy team doesnt take the 1 trinket that counters him/her.
Extra Tower
So early game now consists of safely farming under the safety of a tower. This makes ganking harder than on Summoners rift and TT is all about ganking. This changes the entire 3v3 game.
I am sure there are many ideas out there to throw some spice into TT. The current state of TT has done the opposite and taken the flavor out of TT.