I know you gave a lot of example but all of them are literally spread across the jobs with none having that much, at least compared to the one class that has all those i described which is why the difference felt so big.
Regarding slows and all I of course was not thinking of bosses in mind, more thinking of world or dungeon content where it would actually be useful since they wouldnt be immune to such things, completely understandable that they nerfed immunities, even in wow immunities are quite broken and often too strong so reducing them to DRs makes sense so they are way less abusable.
Though by melee self heal i assume you mean second wind which can be nice but it definitely doesnt feel like some big personal healing cd considering the amount it heals and the huge cooldown.
Interesting to see they are trying to avoid WoW's meta problem by not giving exclusive things to certain jobs, it does make sense, though dont we already have that in a way with ninja's trick attack or other dps damage boost abilities? Or do they all end up being around the same so at the end the result is similar at high end content?
I am starting to understand their choice in the sense that WoW might have all that utility in a single class but their active dps gameplay is quite dumbed down to 4-5 buttons usually ignoring cds so you have a lot of space for random utility skills while in FF14 i was positively surprised by the depth of some of the dps gameplay, samurai for example at 80 is way more involved than any wow class in terms of dpsing gameplay and you cant master it in a few days unlike the vast majority of wow specs, and samurai even though it has mostly dps skills has already been filling most of my keybinds so i can imagine adding 10 more utility buttons would def cause a bloat but that comes at the expense on being highly focused on just dpsing and not helpful in other ways.
I was more thinking utility that can be beneficial to you and less buffing others.
For some examples:
-Having a strong heal cd that 30% +16% hot can help if there's some big burst and healer is unable to heal everyone fast enough so you survive because of your heal cd instead of depending completely on a healer aka another person, and I know melee get second wind but the heal feels kinda small compared to almost half your health heal.
-If you ever have trouble with mobs or pulled two much being able to cc one, mass root or mass slow can be extremely useful for kiting until cds come back up
-If you happen to be fighting a mob that has some type of enrage/buff you could dispel while soloing places like bozja or potd
-And in group utility like that is always useful, tank pulled 2 much and cant handle? A mass root/slow can give them enough time to survive, healer used their dispel already you can use yours etc, all these are very different than just being a bottom buffer so they feel more impactful cuz you are making a difference at that moment.