Would anyone be interested in expanding marriage or a companion's role in upcoming DLC? Maybe that's too difficult to add any real value to the game, or just too far off the game's directive?
Bet you anything this is already being worked on and will be most worked on mod #3 (after nudity and becoming a dragon xD)
Is it "just Lydia", or can you marry any of your other housecarls on the console versions? I only have Lydia thus far and have no marriage options on the 360. About to earn the housecarl of Solitude, and wonder if the bug applies to all housecarls, or just Lydia?
On PC you can marry other carls just fine it seems.
Is there a way to "re-marry" Aela oder reset the married status after she died? I have resurrected her but she acts as only a normal follower if I ask her to join me. I have only a very old "manual" savegame

There is indeed but it involves resetting a lot of variables and two quests and doing so is somewhat complicated without knowing the numbers or references for these

I'm going to assume that this only works on characters who have dialogue files which include marriage options, Hence why Khajiit and unique voiced NPC's don't work?
I doubt that Bosmer would work either.
This is the theory yes. This is also why essential NPCs don't respond either. I believe it's just based on the voice actor/actress that did it, if the character in question is voiced by the same as another marriageable NPC the option is available. There is a list of the NPCs that cannot be married under "FACT" in the console but I have no idea how to access said list.