First off, welcome to the forums and thank you for expressing your suggestions, concerns and ideas. Secondly, wow. This was a long thread to read and if you don't mind, I have some input on it.
Let's kick thing off easily with your suggestion of bedwars/skywars. This is something that we have had in the past and got closed due to the player base not being sufficient enough to sustain the server. There used to be wait times of up to 15-20 minutes for just 1 game to start. While it may initially be a hugely popular server, it would more often than not die down. We don't have the resources nor the player base to sustain this just yet - although I do think it would be an extremely cool addition for the future.
Secondly, I don't personally think that a semi-Youtuber rank would make that much of a difference. The point of the Youtuber rank is to reward those who have posted videos on ManaCube as a thank you. I also believe that with an increase of Youtuber ranks, the less lucrative the role becomes and therefore loses its value as a reward.
Finally, the suggestion you have of a "Community Manager" is basically what staff members do now. We are all active players of the community with an extended role within the server. We are always available to talk to, have fun with and deal with any concerns a player may have. We also have the support section where people can report staff for abuse or any difficulties they've encountered with a staff member which will only be visible to Admins+. If you want to help people like you state here, I strongly urge you to make a staff application and go for that.
All of these ideas may very well be added onto the server and all of them have their pros and cons. However, I’d strongly urge you to post your suggestions on our suggestions website. They’re far more likely to be viewed there by our dev team and admins, it will also give other users the option to upvote it and give their feedback regarding your ideas.
https://manacube.featureupvote.com/
Roza