Will more Guardian levels be developed?

I don't think they should, I still regard the Guardians as pointless and it's just a way to stop Sulake spending money themselves on people who can actually do the work. Why should normal players be able to mute people? Regardless of whether it's a long time or not, they're not elite and although I haven't seen people showing off how they're Guardian it is annoying when people are abusing the feature.

I think they should just give us a badge + a furni from getting to the furthest stage there is now and say that's the end then begin on new paths.

I think that they should create a new stage and perhaps create something like the old 'Hobba' programme where you were considered for additional powers if you got to a certain level, etc.

I think there will be, but I disagree with additional powers.

So yes, but not positively.