The price for some manors is ridiculous. I previewed Linchal Manor yesterday. It is nice, but for that price, it does not offer that much compared to other manors. The two towers are quite useless, the house interior is rather small, the house lacks any basement, and it is quite far from a wayshrine or town. BTW, I would add an escape tunnel to Kvatch.
I would invest my subscription crowns gradually in a large home, if the devs would allow us to buy such a manor, empty or in ruins. In time one could upgrade or repair each area with crowns or even with gold/AP/materials/vouchers. The item limit would be increased with each area that you unlock. This could be a nice game goal to work for.
In this way, the devs could even add customizable homes, say maybe instead of a barn I would upgrade that area into a library or armoury. Also I am a fan of the houses that have basements. Such a home could have various basements to purchase, like a vampire themed basement, a simple wine cellar or even a daedric portal to some pocket realm. The upgrades could be traded, bought from vendors, unlocked with achievements, maybe even crafted, so there would be a new market for housing related stuff.
This would add some replay value to houses, because if you get bored of a large house, you can change the upgradable areas into something else!
[PC/EU] Tamriel Hero, Stormproof, Grand Master Crafter