Just to point out that Interplay didn't made any good Fallout games, the good ones were made by Dragonplay that turned into Black Isle Studios later, which was a division from Interplay but they were their own studio really.
Tactics was made by Micro Forté (an Australian studio) and Fallout Brotherhood of Steel was made by Interplay.
Interplay learned it's lesson and got Black Isle Studios to make Van Buren (Fallout 3), which seems like it would be a more modern cRPG but that still retained all the things that made Fallout and Fallout 2 being Fallout games, but it got canceled when 90% of the game was made or something like that.
Black Isle Studios was disbanded and many of it's people formed Troika Games, which made more great cRPGs (Arcanum, VtM: Bloodlines, The Temple of Elemental Evil), they tried to buy the Fallout IP but Interplay though the deal with Bethesda was sweeter (Bethesda would be able to make 3 Fallout games and that was it, that was the deal), but Bethesda managed to put Interplay in court for reasons that would derail this post and managed to get the full IP out of Interplay (basically it was an hostile takeover of the IP using the courts because Interplay was already getting bankrupt and couldn't drag the court case so it settled in an agreement IIRC, I might be wrong, it was many years ago). I have no doubts we would be having great Fallout cRPGs if the IP had been sold to Troika Games.
Later Troika Games was disbanded and many of it's people formed Obsidian, so they would probably own the IP now, if Bethesda hadn't swiped it in court.
Well, all this to say that no, Interplay never made a good Fallout game either, because they only made Fallout Brotherhood of Steel.