STR:
Sign up for Cube Draft. Note description says that you won't get the cards, but says nothing about limited rank.
Play Cube Draft.
Note rank doesn't change.

Actual result: Rank doesn't change, even though the event doesn't say this.

Expected Result: EITHER Rank should should change as you play OR the event should say "This event doesn't affect your limited rank."

Note: This should be true of every limited event for limited rank and constructed event for constructed rank. Either the event says "Unranked" in some fashion OR the event should affect rank.

I'm very disappointed to have played a Cube Draft and gotten no rank changes out of it as we head into the end of the season. If I'd known it wouldn't affect rank, I'd have picked a different format.