Are there any mods or console commands that causes spouses to retain their usual schedules during the day and only go to the PC home at night and or for occasional visits? For instance, I really like Ysolda but it bugs me that such an enterprising drug dealer never leaves the house and doesn't do anything but cook after the wedding. I’m not looking for a Ysolda specific mod, I’d like one that affects all spouses if any exist. Even if the spouse isn’t in their native city and therefore wouldn’t be able to have their standard conversations with other NPCs, just having them wander around the town, look at the various market stalls and whatnot until closing time would be really nice.

You'd need a quest that overrides the default marriage quest or gave them new packages on the existing, or you could try a follower mod and assign them areas to sandbox in. There was a mod called Spouse Life that gave them a market stall and let them visit the inns and whatnot in the evening. but I think it's disappeared from Nexus.

Creating such a quest wouldn't be that hard actually just copy the default packages apart from certain times of day, could be your first mod project.

You can use this mod: http://www.nexusmods.com/skyrim/mods/62040/?

Your spouse must be a follower to do this. You can use something like this: http://www.nexusmods.com/skyrim/mods/15524/? to force- recruit an NPC that doesn't come with a follower package.