I see your point about Civ 5 civs vs Civ 4 civs, Ravellion, but Civ 5 civ traits are inherently limited despite their uniqueness, and this actually (in my opinion) makes Civ 5 civs less satisfying to play with than Civ 4 civs, which makes the DLC model of Civ 5 stink even more in my perspective.
Consider England and the Ottomans, whose bonuses are intended for water maps, and who don't have anything to compensate on water-less maps.
You might say, "So what? Don't choose them! And Civ 4 has the same issue," but then you'd get this rebuttal: 1) What if I got the leader randomly, and am not happy with getting Elizabeth on a land-only map, despite the awesome longbowman 2) Civ 4 doesn't quite have the same issue, because of leader traits which work on land and sea, despite the naval UUs obviously having limited use.
You say you get my point, but I don't believe you do. Obviously each new civ in Civ5 needs to be playtested. In Civ4, you could playtest traits, and slap them together and call it a new civ. Therefore, Civ 5 actually has more and different ways of playing the game, whereas in Civ4 it was far more similar from one game to the next. Even if you chose a different Civ, you might end up with the same or similar traits.
Your argument about England/Ottomans on non water maps ring hollow.
If you are not willing to deal with random results, don't randomize your game settings. In Civ4, randomization mattered less, with more similar civs. In Civ2, it didn't matter at all! By your argument we should get back to generic civs, so you can use your random settings and don't feel shafted, when you don't like the results!
Don't even get me started on how quickly units in Civ 5 get obsolete. Civ 4's more complex, intricate and deep tech tree made it so that units didn't get obsolete as quickly, Civ 5, many patches in, still has huge issues with its tech tree and unit obsoletion (not to mention diplomacy or AI in general).
I am sorry, but I don't see any of these issues. In fact, in Civ4 you needed to use a great merchant or several turns of full on cash production to upgrade your 40+ unit army. In Civ5, it is about 10 units, so you upgrade when needed, usually from spare cash. Feels more fluent and natural to me. Civ4 felt like this to me quite often: "Sorry scientific citizens of Rome. For the next two centuries you may not invent new things! Your efforts must go into the mercantile professions, so we can buy new swords for our praetorians". (oh, and I really hated that unit name).
To return to the topic of this thread full-on, the Civ 5 DLC model is inherently less satisfying than Civ 4's expack model, not just because it costs more, but because Civ 5 civs, for all their different traits, units and buildings, are limited in their uniqueness. If I play Japan in Civ 5 I can go cultural, but I get few if any bonuses for approaching it that way. In Civ 4 at least, I had a UB that could be used for various things beyond military. Likewise for Germany. If I choose Germany in Civ 5, my bonuses are ALL military-related, so I must needs use my military bonuses, and Domination victory looks like my best bet (or the UN, killing other players gives me gold I can then bribe the world with). In Civ 4, on the other hand, I can choose Frederick, whose Philosophical trait actually rewards approaching the game beyond the sword. The Panzer unique unit I will want to use, but I have more options when choosing Frederick in Civ 4 than I do choosing "Bismarck of Germany" in Civ 5. I think the inherent limitations of Civ 5 civs may be one reason why 2K/Firaxis is releasing scenarios with each DLC package--to allay fans who will get tired of simply having another (prettily decorated but limited) AI to play against. If 2K/Firaxis addressed the diplomacy, AI (i.e. make it so they aren't all just warmongerers like they are now postpatch) and made civs less limited strategically as far as bonuses go, I think I'd be willing to pay the current standard rate for DLC civs.
So I understand that what you are saying is that you rather have less unique and rather similar civs, and would be willing to pay for those in an expansion pack where they all would be collected together, but then only if the cost would be less than Civ5 DLC civs.
I suppose I agree with you in one way: I never bought the CIV4 expansions till I could get Civ4 complete for 20. The civs added little to the game, so I was only willing to part with a little of my money for it (I was annoyed by the expansions putting balance patches in that I couldn't get unless I paid for them though). The difference between you and I is that I am willing to pay for uniqueness, you are not. Guess which one of us is going to be the preferred customer of Firaxis, and will get what he/she wants?