This change definetely has to be done, otherwise having it done with PvP would be completely pointless.
You cant say for PvE content that this feature would make the gameplay of cerrtain classes too easy while being able to save your face with the same arguments when you look then at PvP, because these arguments destroy them self immediately as long PvE znd PvP classes are played differently to to PvP having actually Chain Combos, while PvE content doesn't have them. Its just plain simply unlogical double morals here to defendthat classes shouldn't receive the improval of PvE class design via Chain Combos, when exactly what people want already exists partially in the game, becaus miraculously are the same people not wanting to have this feature in PvE totally fine with it for PvP - hmm just why???
Chain Combos would massively help to shrink down classes with currently too many skills, to get back some skillslot space, what is especially needed for PS4 players to don't have to swap permanently in combat between 3 or more skillbars, what can be not only very annoying to to, but unneccesary skillbar swapping prevents also from losing your attention and focus on the actual battle eventually, because of looking at a wrong moment at your skillbar in search of a skill you want to use instead of watching the battle in front of you
Pressing 1-1-1 is in no way more difficult than 1-2-3, the difference ist only, 1-2-3 wastes 2 skill slots more than neccessary >_<
Two potential skill slots that could betheoratically rather used for more interesting better designed skills to complement and expand or enhance the gameplay of the jobs
Monks is a very good example for that, made extra an updated redesign concept for that based on the Shadowbringer Changes, how I'd love to see this class getting changed to become more martial artistic with the help of 4 different chain combos, while filling up created holes with new skills and mechanics plus a lttle dream example for how i'd love this class to be like with the next expasion when we are going to get Lvl 90 then
That SE isnt fearing to do complete class overworks to make them better have they just proven with the machinist.
So I see no point why they shouldn't do that too with every class every now n then, like for example with the monk when getting redesigned with the feature of chain combos in mind to make this class an even better and more authentic martial artist, than ever before ,which is able to link one chain skill combo into an other in a row then, letting the gameplay come this way a bit closer to Xell Dincht from FF8, who links his skills with his limit attack to a long enemy crushing chain combo