Been like this more or less since ARR. I don't expect them changing that anytime soon. Didn't people finish the content in 4.1 in days? I havn't even done MSQ apart from unlocking Skalla cause i dont have an urge to do so.

Only they added after that is savage raiding which a minority can do, same thing with Shinryu Ex even though its a bigger base that Coil Savage.

I really hope 4.2 brings something good like... Eureka (though probably Diadem 3.0) and maybe new Deep Dungeon in Ruby Sea?