I want an #MMO that is just boss fights.

I want an #MMO that is just boss fights. 

Why is that not a thing?  Is it because the mind numbing level grind and poorly written story missions are more replayable?

I'd rather just have raid progression. I'm not even sure you need a social area. Everyone should be in the raid or in the foyer preparing for the raid, all the time.

Why do I have to ride to another village or fly to another planet to upgrade my stuff or swap out my gear?  It has to be a time sink. 

I'm not sure you need time sinks. I think somehow, we got this idea in our heads that MMOs needed time sinks. I'm not sure they do.

They could just be all the fun parts ( i.e. the raids and dungeons  and pvp ).

All activities get a little foyer. You sign in and go to that foyer to wait for your friends to log in, and then you walk into the encounter.

You level up by raiding. Start with the raids you can beat, get your drops, balance and spec and move on to bigger and harder raids.  

The downside of filler content is that the artists and engineers have to spend time building and testing it. Time they could be spending  on non filler content.