Combo compression has the merit to leave room to introduce more abilities and things to bloated toolkits. While they can definitely make toolkits more engaging (they have been in the past after all), it's still a good solution not to have half the toolbar dedicated to a single combo. Combos are dumb to begin with anyway, especially if they're not branching or proccing.

Now, if SE is actually interested into shifting the balance back onto job intricacy a little, I'm not exactly on copium.