Considering what this site is dedicated to, I thought the type of game I would be interested would be obvious. For the record I can't stand CiV
Well, an awful lot of people here have gamining interests other than TBS. Further there are probably a number of people here that used to be into Civ and got into the community then and have since lost interest. I am active on a couple RTS boards and can barely stand regular RTS these days, and then only if the single player has something different to offer.
Graphics are necessary. They don't need to be realistic (see Borderlands or Okami) or of hi-res (see Minecraft), but they are still important. Can you make a great game without graphics? Absolutely, but it is a lot harder. Though it is true that you can't make a great game without good gameplay. Particularly RPGs or any other immersive story driven games have graphics as an essential gameplay tool for building immersion (imagine Amnesia: The Dark Descent without its graphic style and quality).Yeah, I guess it is the gameplay that kinda keeps you stuck to it, but with that type of game I still think really pretty graphics shouldn't be sidelined! I want to drool over the gorgeous view... when I drive my pickup truck over the side of a mountain.
In a game like civilization, immersion is so much less important (and derived in different ways) that graphics aren't as important, though they still play a role.