I too believe that the RT, doesn't realy fit in the fallout 1 & 2 environment. I don't mind it in fallout tactics.
I'm a game developer myself, and from a gameplay perspective you either go RT or TB but not both at the same time, It's confusing. And due to the fact that it's a tribute to the original developers interplay & black isle I would keep it TB.
Also because it's actualy based on a lot of gameplay ellements from D&D, and you don't have RT in D&D for a reason.
If I had the time I would try to remake it more like the original one. I do love all the new places and cities they've created it's pritty insain.
I'm a game developer myself and from game design perspective both should be an option. If one of the modes is too exploitable that should be disabled for those locations, for example no TB in Town Control, or simply if there are more than 10 players on a flare trap, otherwise it's just wasting players time.
D&D is not a PC game as far as I know, but pen&paper/tabletop, where TB is a must due to technicality. Other D&D based games for PC are RT and worked well, for example BG1/2 where BG3 is TB and the TB part it sucks big time. Pillars of Eternity keeps the RT design of original BG's and it's a very enjoyable CRPG game.
As for what TB and RT goes, I am working on a mix of them to make TB with lots of AI tolerable, where all AI in the same stack make their turn simultaneously, followed by player than either a stack of AI or player depending on sequence. Hopefully I get it done before my time on this project runs out because I like TB more as well. Then it's just a question if it's compatible with Reloaded and when/if they adapt it... so gl