You are joking right!? Even with BNW Civ V is a very simple game. Its already been ruined by having concepts such as vassal states and public health stripped out.
BNW and BTS are pretty similar. Corporations and such in BTS are basically an extension of the religion mechanic with cost.
Don't get me started on vassals. I love civ IV, but there were few mechanics on such a broken level as vassals:
- Targets capitulate to you if you get weaker in some instances
- Targets won't capitulate because you're at war with another civ that is stronger than them, but much weaker than you
- 8 tile rule shatters the willingness/resistance
- It's possible to win on high levels by letting your vassal conquer everyone, abusing deity bonuses via gifting them cheapo units to upgrade
- Peacevassals were used by AI as de facto permanent alliances
The only mechanic that was more botched and indefensible was random events. One of the best things about V is that it is far less dependent on pure luck screw, both in early combat and with nonsense like that. Its spawns might not be great, but spawns have never been great in Civ.
Edit:
I'll vehemently resist stripping the importance of strategic choice in a strategy game
. One of civ's selling points is its depth/replayability. There are certainly shallow TBS out there if you want one, don't bring that into civ!