PSA: ALWAYS Call Your Role! (Even if you think it's obvious)

I've had many experiences where people will respectively lock in a champion with a certain combination of summoner spells (e.g. Exhaust and Flash, Teleport and Flash, Ignite and Flash) and proceed to AFK for the remainder of champion select or just not call the role they are taking. Then, when their role is assumed by their teammates (e.g. the Exhaust/Flash is assumed the support) they come back wondering why someone took their mid lane (and often starting unnecessary arguments). Yo, this game can be diverse with champion/summoner spell/role combinations. Even if it may seem obvious that you picked Vel'Koz with exhaust for mid lane, not everyone knows this for sure.

In summation, clarity is key to get the most positive experience out of champion select, and assuming things is NOT being clear.

Thanks! Edit: Love ya, dynamic queue <3