I think a solution to most issues regarding the game type / map selection that we’re seeing a lot of is to include a Veto option from the Halo 3 days. It’s not a complete solution but at least it would allow people to vote to skip a certain game type / map combo in a sort of democratic way.
I know that this also introduces a lot of issues in terms of having a game type and map skipped for another map playing Slayer (as was the way back in the Halo 3 days), but it seems to be a lot of people quitting at the moment.
I think this would lead to never getting a game of stockpile (no one on here seems to like it) and if you have a challenge to play a game of stockpile it will be frustrating.
If they got rid of such challenges I’d be for a veto system, I like it.