Umbrellas...? And less content...?

[linay]

How would you like it if I told you to just go back and do Alexander if they decided not to add a new raid?

But they are adding new raid, and new trial, and new dungeon, and maybe other content as well.

If the static/BA approach becomes the way to progress in the game

Why is this a concern? Tomestone has always been the main way to progress in this game. All other ways are alternatives.