I'm going to be prettyv critical in this post heads up.
Using a custom-built map and different minigame rules for the modes, the server does not get boring.
The map looks pretty similar to Farad's parkour construction site from 2014. Randomizer too me doesn't add anything from most deathmatches and trying too modernize and flesh it out into a full gamemode is a respectable idea. But rehashing a gamemode that already had little depth to it won't work. You are a great builder but the projects you seem to take up die pretty quickly because they lack innovation. Capture points had a great map but at the end of the day team deathmatches in blockland get old fast. The random aspect of this game mode won't keep it fresh because too most people it's probably gimmicky. Boss battles is one of the most popular servers nowadays and it came out in 2011. Since its inception, it changed very little because it was a fun and fitting gamemode for blockland despite it being a super simple idea.
Maybe I'm wrong but the fact you mentioned the server doesn't get boring and that this post and the server after 2 days have gotten very little attention leads me to believe this gamemode will fail too. Not that I want it too but it seems like another gamemode that doesn't innovate its source material and blockland right now needs something original and fresh. My suggestion would be to on your next gamemode endeavor really look at doing something that hasn't been done in blockland or maybe that never took off in the way it should have.
But again maybe I'm wrong and this is the gamemode people want right now but honestly, I doubt it.