Lots of posts about building sightstone...
... but not a lot of people talk about trinket usage.
Granted, there's a few obvious reasons why: sightstone's existence is more visible (heh) than someone's trinket cooldown, and sometimes you can't use trinket when it's off cooldown. Sometimes you can't immediately ward with sightstone as well, but there's no cooldown limit to it either.
Although, as a support main (although I haven't played as much lately, due to midterms), it does get a little annoying when people harp about sightstone when it's not uncommon to see your midlaner use about 3-6 wards every twenty minutes. It likely gets better in higher elo competitive, but low elo and normals is downright annoying when people play blind as a bat but still harp on you about vision.
Along with the upcoming season's changes upon invisibility and such, I'd appreciate it if vision was looked upon as well. More vision options for other roles (sacrifice a wee bit of stats for utility), more interesting vision items for supports that can replace sightstone (on a per game basis, mind you!) that are comparable to Kalista's ghosts for instance. Promote different ways of playing the vision game, items that promote roaming and such.
I know it's unpopular to say this, but sightstone is boring. Everyone buys it, every variation of sightstone does the exact same thing (be a ball of stats and some wards), etc. If I were to compare it to another item set, I'd say the hextech line, but instead of bolts we get wards. Support is the role that sacrifices glory for the good of their team, but it should still be looked on to still be "fun" for the average player, instead of having mechanics that feel like a chore that nobody else wants to do.
except when those items are semi-meta and not seen once in a blue moon (disclaimer). Strategy, dammit!
is a thing, you know...