joshcore: Is there anywhere on the player profile where we can monitor;
- how many games we have played in a certain tier, and what is required to move to the next tier?
You'll see up to 200 rounds in your score history, so you can count them there. Beware the disambiguition coming with "unlimited" tournaments, where, after an upgrade, you play in the old tier's leaderboard but the score counts towards the new average.
For an up-to-date list of requirements, look here.