Please bring back the old trinkets.
It's fine and dandy that you want to change a lot of things riot. But right now, with the new jg starters, lack of mana potions, new marksmen, and new AD items. It's all just too overwhelming to change so much at one time. Could we start with teaching the baby to walk, instead of throwing the baby into the deep end of the pool?
Thanks to this new update it's even harder to keep any lasting vision on the map, especially in bronze-plat elo. You're also effectively blind until level 9 when you could buy 2 wards to supplement your trinket last season. Since vision is a large part of play competitive or not, wouldn't it make sense to have it at least semi-available?
This is just my two bits on the matter, and I am aware of the capabilities of blue trinkets, but after using them myself I have learned how to make them useless for the enemy team.