I hate what Riot did with the trinkets/vision
I used to always upgrade my trinket to the greater stealth ward totem, and it was amazing to have my lane warded all the time, now I can't buy any individual wards or not upgrade my trinket. Yes I am aware the trinket automatically upgrades itself, but it is awful in comparison to what it used to be. Let us still have the option to upgrade those trinkets for better vision. It is a sick joke when they say "you can place up to 3 wards at a time" now because I can't place more than 2 wards at a time now, one green and one pink, unless I am jungling and get the ward jungle item or I am the support. I thought vision was a team effort, not just rely on the support's 3 wards on a map.
Simple math: 1 charge every 120 seconds for a ward that lasts 120 seconds = 1 ward out at a time, or less if a sweeper picks it up, that is at level 18, at the lower levels the map is going to be even darker.
Note: I find it cool that supports have sight stone combinations and Ruby Sight Stone is a bit cooler now, but now everyone who isn't a support is screwed over if they wanted to ward, I averaged 20 wards a game, now its going to be at best half of that because I can't buy wards or upgrade my trinket to something better than 1 ward every 2 minutes.