Imo, dodging punishment tiers should drop per games played, not by time.
######In PB because it seems like the best fit
Every other punishment tier goes down over games played, so why do dodging punishments reset daily? For consistency's alone, it seems...wrong to have dodging's tiers go down in a different method than every other one. That, and it just encourages waiting instead of playing.
I'd personally make it every 10-ish games (The specific number isn't important, as long as it isn't totally trivial) in the queue you dodged in drops you a tier. Dodge in ranked? You need to play 10 ranked matches for it to go down in that tier.
Queue lockout should be overall longer after the first tier as well, imo. Make the first one free if needed, but then make it a much longer lockout from there on out.
It'd help cut down the number of dodges in ARAM, if nothing else.