Personally I wouldn't like story locked behind waiting on 24 people for me.

I would like to see extreme solo and 4 man dungeons and trials. Half the work is done with reusable assets. Doesn't make sense to use resources on content hardly anyone does and not use it for something more people might do more. I am not saying get rid of raids, but apply the same design focus for solo to 4 man content.

Content a little harder than your normal stuff. Which I think normal and hard modes are normal.