Essentially, the way the tiers work now, one can be “punished” for experimenting with one colour more than others. I’ve been mostly experimenting with Blue/Black decks as of late, and as a result, have been ranked in Platinum tier, while still mostly using the same deck I did when I got bumped from Silver to Gold.
Make the mechanic for deciding in which tier one belongs include something that would take into account, if one has a deck that can combo multiple mythic cards and kill ones opponent in a couple turns, or still uses more basic mechanics.
Technically you would only be platinum in events where there is a node with a color that you’re platinum in. So if you are only plat in black and silver in everything else than any event without a black node you would be silver.
The issue is Oktagon makes every event 5 colors (and most nodes multicolored).
I feel like an easier solution would be to go back to mono-color nodes in events, which would mean that you’re only in platinum in events where you actually have a chance.
Just for reference though, people have been asking for a tier rework for years. We’ve had ELO systems, card weighting systems, deck-by-deck analysis systems, or just the same system with higher tier-up thresholds all proposed and ignored several times. I doubt any real change is coming any time soon.