Call me crazy, but when you're changing the original version of a game, it feels more like a remake than a remaster. Resurrected changed a couple of things around while it forces you to go online just to play the fucking game offline. I think that's fair critcism.
It isn't, and it doesn't. On launch shitzard's servers were basically non-functional with 1 hour+ queues and frequent crashes/disconnects, I was one among many people who simply chose to not connect to bnet and play offline and laugh at these poor fucks doing nothing while we cruised comfortably on /p8.
As for the changes, no. You can disable literally all QoL to get the experience that's 99.99% like the original D2/LoD. Skill quickcast, auto gold pickup, terror zones, improved stash, loot filters, auto join/accept party requests - all can be turned off. The only addition you can't remove is the new runewords, and even then I'm almost sure they're exclusive to ladder. The only change in text appears in Hratli's dialogue, where I think "midget" got replaced with something else or outright removed. Again, only in text, he still says it normally. And the only cosmetic change, which I'm sure is a graphical bug, is when your character gets poisoned with legacy mode on - only the head turns vibrant green, as opposed to the whole body.
D2R plays 99.999% like the original D2/LoD. It's a remaster. It actually changed
so little in its gameplay that "fans" lambasted VV for it, saying they released a cash grab. The arguments were as usual - why buy this if the original runs offline and on a potato and with mods you can do this and that and yadda yadda yadda. True D2 (not Median or path of diablo or whatever) fans, who cut their teeth on the game and hardcore autists who ground it into fine powder appreciated the changes which reduced the tedium considerably. Hell, one of the biggest changes is cross-platform and cross-region play, which dealt a mighty blow to faggots engaging in RMT since everyone can just trade with gooks, who absolutely nolife this game and drive the prices down.