They cleary stated that mods would work, just not by the same reverse engineered code as before, but as part of their plataform. Like they mentioned on BlizzConline and by the recent post:
So, no isn’t useless you just need the modders to do what you had on classic d2. If they won’t do it, you always could keep playing what you already have. The plataform will be different but doesn’t mean that couldn’t have mods, maybe a fewer at launch and some emerging later on.
That most likely would be solved by using google servers, on d2r open beta the connection was way better than early access beta, but they need some improvements in that end for sure. You also can always play single player if you want it without relying on any internet connection, only periodic ones for validation and updates.
They removed a non-secure feature. While most likely the global server with google cloud servers being able to satisfy the connectivity of everyone, they should create a way to improve the latency either tweaking the netcode paired with that. Most likely at first ladder season the servers would be working really well. I had excelent experiences with the same feature on Overwatch, even playing on Switch with folks around the globe.
That’s a thing that will be on consoles, which at launch will be like that. Could be changed in future, like the restriction of nintendo switch to play only with 4 players.
They didn’t screwed up anything, they removed a feature that was well know as insecure like the one who made bots, hacks, cheats and mods being a thing on classic d2, after some folks exploiting on Alpha the feature. Because of that they closed that door and will use the battlenet plataform for it, like their other games already have.
They will not mess with classic d2, they just don’t want that the same “bad stuff” that happened on classic d2 happen on d2r. If they kept TCP/IP the same would happen in a couple of hours.
Those modded servers stopping to work on their own variant of Classic D2 has nothing to do with D2R. Like blizzard stated they wouldn’t do anything towards them. That couldn’t be said about D2R tho. Unless they reach blizzard and accept their terms to begin with, instead of unreasonable demands. There’s a legal section who details everything about how they could approach blizzard in that regard, so far I didn’t saw they even trying to follow it.
If you’re not confident on their work, you should cancel the pre-order(if you had) and wait to see the launch and have your own conclusions about it. You can always go back and play classic d2, like you always did, while you wait about what they gonna do with d2r.
I’m not gonna say minority, but with enough optimizations paired with google cloud services, could give you an 20-80 ms easily. On open beta I had moments with 62ms(normally at 120ms) and I’m outside of the U.S. On overwatch I can reach 42ms(normally at 72ms) sometimes. For a person who played on their classic d2 realms with 2k-4k ms it’s really different experience.
Unless you’re playing on console you could do just fine, like you always did on pc. On the other hand they stated some console features:
If you didn’t liked what you saw, feel free to refund and see for yourself if will be a flop or not. I hope those info could help you to make your own decision.