You make a good point, Felo, In spite of the general consensus, losing the major option to let users do what they want with their game in a given manner, so to prevent mods from being used online (when having a multiplayer/cooperative mode) as an anti-cheating measure, is crazy as it sounds. And that means letdown. Except coop might allow mods to carry your progress, much like others game achieved it already.
Depends on commitment, as usual. Were the new publisher to handle the work to a third-party studio, it should insist on doing the upcoming game(s)/remake(s) on an in-house engine using the 2.5D/3D isometric view.
Imho should a modern engine, Unity (one Shadow tactics uses, Felo, Mimimi used Unity engine!), Cryengine, Unreal, Gamebryo be used the disappointment will be of an unseen scale.