You must be blind or really dind't got the general idea. Or just playing dumb on purpose.
No one ever said UE4 will make game less grindy or change how the game works on paper. That's not the main issue of the game. This is a MMO, it's meant to be grindy. Otherwise you will play will you reach 60 and never login back. If you expect a pvp game with "balance" there's things called LoL, DOTA, Overwatch, CS, Fortinite, and so on. If you want a MMO where grinding don't matter, then that's truly not a MMO, sorry. Company will make game free, and put the p2w content to profit, or will charge you 100$ to buy the game and charge you again for expansions.
UE4 will fix what was the initial issue, the lag and the poor optimization since this game runs over UE3 and DX9, which are not supported anymore at some extent because newer engines and graphical technologies got released.
I don't mind farming a hundred dungeons, if my experience while doing it is smooth. If I can run the game on Max graphics, AA, full resolution and at 100fps, I will enjoy every second of it, because this game was made to be beautiful, to please the eyes. Sadly, with 5 fps while on low settings, I can't enjoy any of it. And I'm sure 99% of the players think the same. Specially those who already quit out of frustration.
Saying the game is boring because you need to farm everyday, is just a matter of how the devs will introduce content. But Putting more content won't matter if you can't even play or enjoy it.
But,,,, of course, if we have a bigger community like some years ago, finding a raid group, a dedicated party and more reliable players will smoothen the whole gameplay on that matter as well, instead of having to fail and stress myself because everyone lags and nothing works. Gameplay implies you playing the game and being able to do so.