It's own Roulette would be bad I think. Just lump it in with the Frontlines rotation. I know it's not technically Frontlines, but both modes are "large scale PvP", so both should share the Roulette/rotation IMHO. I don't see any reason why the Daily Challenge: Frontlines, couldn't just be reworked to Daily Challenge: PvP. Could even slap unranked Feast in there in some form (some certainly want 8v8 back).

I actually think Hidden Gorge was a significant improvement over Astrologos. Shame to see it effectively be completely wasted development time, because if you guys think it's hard to get pops now, imagine it after your data center split...