trust me mana flow band isnt the only nerf thats needed. Proof? Points at the curret match ending times. All games are faster now. Thus the new runes overall need nerfed. As they created a power creep from hell. That has basically ruined any chance of a team coming back that screws up after 15min. Might as well FF at that Point.
Less game time = less catching up time. So now theres no time to farm under turrets trying to stall till you catch back up in levels/cs to the enemys. Now its more important than ever before to win/push lane. and roam to apply your power there. Making top the current hardest role to play I feel. As they are used to an island. Now they take to long winning, or win top for to long mid and bot lose and its gg for them. because its 1 fed, top vs 4 fed enemys...
On a side note this has made champions like Teemo very valueable to teams. Where before he was useless. One of teemo's strongest aspects is stalling lanes out, kinda like donger's. He can use his shrooms to afk keep lanes from pushing in. I believe champions like Yorick Teemo and Donger will be seeing more play this coming season due to their simple power to stall lanes that are fed. Yorick can use his ult, and even build a banner, which being 2200gold and the quicker games seems like a good item now, to push one lane while grouping with his team. Donger can make 1 turret = 5 turrets when needs be to hold off a seige. Thank god banner of command doesn't buff his turrets by 15% and give him ap like it used to lol.
Of course teemo shrooms, are argueably the best ultity ability in the game.
Grants vision, Slows, Stalls lanes, Frustrates, Annoys, Forces pinkwards and sweeper buys, oh and with gathering storm if the game got to 50 min mark prob... would pental kill a full hp team if they walked over 1.......