Frankly, if you want to advance your YouTube channel and grow, you have to move away from Blockland.
Blockland has a small player base and it won't get much bigger, especially since the game itself isn't being developed any further. If you want to stay with at least what you have now, stick with Blockland. It's a good niche audience that works as a kind of safety net. But unless you either find another, bigger niche audience and a platform to get your videos out to people (like this forum,) or unless you spend tons of time making consistent, high quality videos as if YouTube were your job, it's going to be hard to get anywhere.
I have another channel that I started doing things on, and I've gotten to around 9k subscribers now. My main Blockland channel is kind of going nowhere, so I'm just using it as a casual one now.
interviews are loving gay. the kind of players to spam-add youtube channels, and be the bulk of your viewers, wont know who any of the users you interview are, and wont have an interest.
do like how minecraft videos, and review new mods. for some reason people love that crap.
or do a segment on jacking saves from servers, and renovating stuff builds into win.
or do a blockland unboxing.
Also this. To a degree. Interviews and livestreams and stuff COULD be interesting depending on how you do them, but they won't get popular. IMO they're only good if you're already popular and you've already got a pretty stable subscriber base going.
Also Blockland unboxing what. >buy on steam. >play. >end video