You're right, I had forgotten that BC includes ImpeREAL Cities. But it works with Open Cities, huh? That makes the latter even more appealing to me.
Better Cities is beautiful, and as I don't really expect to be doing much battling in towns once the MQ is finished, the performance hit wouldn't bother me. But I love the idea of the city walls being modified (Bruma gets a wooden palisade! Cheydinhal gets low stone walls that look just like those in my home town! Bravil relies solely on its moats for defense!) and the districts being reorganized.
I may down load both of them and play Open Cities Reborn with Julian, and Better Cities with a different character (obviously not the same world or the same group of mods).
The mod I was having trouble with was MD Saddlebags V3. The saddlebags never showed up in the traders (a recognized problem), the console command recommended by the creator never worked, the patch didn't fix anything, and the game just kept CTD while I was galloping along the road. Since I removed the mod, the CTD hasn't been an issue at all, and I've played about six or eight more hours since then.
Since Julian travels so light, I really don't need the saddlebags. I just thought I would try it out and see how it worked. I'd much rather have Julian get camping gear, especially as she has to camp out in the high Jeralls while she recovers the armor of Tiber Septim. A portable bedroll would be nice to have. I did find a few camping mods, but they are much too fancy for me and Julian. So we use bandit camps instead, after clearing them. Free food, a good fire, cooking gear, and a bed out of the wind. What more could a wandering soldier need?

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I did look at OOO, but decided against it when I read that starting a new game after loading it was strongly recommended. I don't want to restart the MQ. As a matter of fact, for my next character, I would rather skip the whole MQ/dungeon tutorial and have my character start somewhere else, and update the MQ in the background (but not with my PC as the Hero of Kvatch - for me, only Julian of Anvil can have that honor). If I could figure out how to bypass the Prison start, I would then reconsider OOO for a different PC.
I am interested in Slof's horses, and have downloaded them. I had tried out the DLC Horse Armor on the XBox, and hated it. As far as I could tell, it did nothing for the horse's welfare. I also hated the way they looked on the horses, too. So I have not used it on the XBox since, and did not download it for this. So Slof's Horses will be loaded sometime when Julian is on the road to Anvil.
I'm not terribly interested in castles for my PC. I'm sorry but Julian and I are just too blue-collar for the castles, or even the fancy manor homes.

I'm already creating an alternative interior for Gweden Farm for Julian when the Sirens are cleared out. I've got the upstairs done, and will be working on the basement next. It's small, cozy, and doesn't need much stuff. My favorite house in the game is Benirus Manor for its aesthetics, but it's just too big for me. And it's not Julian's taste at all.
I am also very interested in Kvatch Rebuilt, as the city plays a huge role in Julian's future beyond the MQ. My only peeve is that the PC becomes the Count/ess, when I firmly believe it should be Savlian Matius who gets to sit in the fancy chair. I'm wondering if that can be modded so the right person (IMO) gets to sit in the right chair.