I hope they don't do that. I agree with YourArthas, this wouldn't feel like Warcraft III anymore if they change too much stuff. Adding some WoW lore/design scarcely, why not, if it remains reasonable and without retcon. But if it is overdone like you are suggesting, it would feel like a new game. Keep in mind that some people don't like WoW, or just dislike WoW lore. Those who like WoW already have the opportunity to play WoW and enjoy its lore, landscapes, cities, etc. Don't take away Warcraft III from the fans.I really do hope they increase the current lore fidelity for the whole campaign, not just Stratholme.
It would be really nice to see, for example, custom skins for the high elves and Dalaran units and buildings and a proper looking Silvermoon during Path of the Damned, the same for the buildings during the Curse of the Blood Elves (it kinda feels wrong to use human building models for what is strictly a blood elven campaign, specially now that they are going to be high res).
One thing I think is a must, at least, is to have the last Curse of the Blood Elves mission properly themed after the Black Temple, make the Black Citadel tileset more like Shadowmoon Valley, so we can really feel like laying siege to the Black Temple to overthrow Magtheridon.
Minor additions could include having the Draenei models look more like Broken (Ashtongue) instead of Lost Ones, at least for the campaign when you meet Akama. Have the faceless ones more varied, at least a different model for the castes, similar to how they are in WoW. Please make Pit Lords head on fire, Mannoroth's head was already on fire during the classic Grom cinematic, it should be ingame as well. The Tomb of Sargeras could really use a revamp to look at lot more like what we've seen during WoW Legion.
Take a look at the Blizzcon panel: Grubby asked about clans and other battle.net functionalities, and the devs replied it wouldn't be easy, but they are going to try, even if they can't make any promise.After watching the interview between Grubby and Pete Stillwell I'm sad to see the clans go. These clans have been a part of Warcraft 3 for all these years. The group function in Battle.net doesn't offer the same sense of community. I'm very sad that my clan, that I've been in for 14 years, will be removed(?). Hope Blizzard can look at this..