another reason which I don't know
-Bugs. Lots of bugs
-Only three maps
-No achievements
-No leaderboards
-Never received an update
The game was rushed and released prematurely to meet their goal of releasing a game every week during the summer of 2015. I'm not sure how I feel on it to be honest. It's very similar to Eggwars, minus the fact that games take place on an overworld rather than in the sky. I think I'd rather just see overworld maps for Eggwars rather than reviving the gamemode.
To bring this gamemode back, they'd have to resolve all of the above issues, plus rework the shops entirely to support 1.9 combat. All that effort would be to get one gamemode back, that was cheaply ripped off of eggwars. It doesn't really need to be a separate gamemode imo, and isn't worth the investment from the management team. I'd rather see them work on something new (such as an Ancient Greece simulator, or the Parkour server).