Custom Content, in my opinion, is a no-go. Custom content kills the feeling of the game for most people, and will likely shear off a solid chunk of the population who would rather play Ignit simply because it's un-edited. Sure, you can call the little ignit dude (ex-players know what I'm talking about, the NPC that sold shit-tier shop buffs) custom content, but that was only to provide a quality-of-life increase. In terms of bosses, raids, etc, I would rather see that dev time go towards updating and patching the game. Stuff that actually matters.
Just my 2 cents. Fight me.
An aside: I think the high-concept argument that we speak English, and therefore want an English server, will suffice. Ignit is dying because of the staff being greedy and not forth-coming of their promises of updates (it hasn't updated in months.)