...
1. It was the Federation and Romulans as allies, with the Klingon Empire being the enemy power.
Not only do I think this possibility would have been cool, but I would have bought it a lot more, since in TOS it seems to me that the Romulans were the enemies concerned with "honor" and such and the Klingons the ones who would scheme and do anything to win. But the Klingons were more remembered as enemies, and so the message of peace was better served by things having improved with them, whereas the Romulans seem to have disappeared behind their borders for decades.
I think we are meant to believe that peace with the Romulans will happen some day.
2. What about if the Klingons and Romulans were allies, and the Federation was relatively all alone?
It always seemed hard to believe that those two could team up for long, and I like their shifting history of betrayal. I suspect there are a lot of half-Klingon and half-Romulan babies running around certain border areas. But if this had been the case, I imagine a somewhat darker series would have resulted, with a more prevalent "Cold War" feel and a bigger looming threat. Again, this would not have represented the progress toward world peace since the era in which the original series was made, so I can see why they didn't do it, but it could have presented some interesting storytelling possibilities as well. You do have to wonder if you'd have to reduce the relative capabilities of the Klingon and Romulan Empires in such a scenario, or else beg the question of why they have not teamed up and taken on the Federation already. In the TOS era, I always imagined the Klingons and Federation were somewhat more reluctant to go to war with one another than they would have been anyway precisely because it is just like the Romulans to wait until their own moment of greatest opportunity and strike against the weakened winner (and/or loser).
Maurice Hurley was going to destroy the Romulan Star Empire altogether in his original Borg storyline! I'm glad this didn't happen.
One unrelated question, was anyone disapointed that we never got to see the Enterprise go one-on-one vs. a D' deridex class Warbird in TNG? Yes, we see the one-sided battles where the Romulans hit the E-D with warning shots in some episodes, but never a to the death battle like we saw in TOS "Balance of Terror".
Totally. The thing is supposed to overawe those on the Enterprise; it's actually sort of in the script for "The Neutral Zone" that it intimidates everyone, and you don't get that a lot on TNG. Dialogue sometimes suggests the Warbird could have severely damaged or destroyed the Enterprise in just a few volleys; heck, even some numbers in the Technical Manual support this idea, and it's not the only piece of background information that does so (also Writer's Technical Guide, the Encyclopedias). I suspect the Federation just doesn't know as much as they'd like about that ship and its capabilities, and avoids taking chances.
A battle between the two would have been cool, particularly if it forced the Enterprise to really let loose as it did in "Best of Both Worlds." In a stand-up slugfest or surprise attack, I'd favor the warbird, but she probably can't maneuver as well* and has somewhat inferior maximum warp speed, so Our Heroes could beat the odds with some clever tactics, as always. Definitely one of my favorite ship designs, though.
*the designer forgot to include impulse engines on the model
