While it is probably preferable for followers to have their own horse, I'd like to see an option where if only one horse available the follower rides behind you on the same horse, this of course should come with a penalty, the horse being slightly slower in both cantor and gallop, walk speed can remain the same, looking at a saddled horse, there maybe enough room for the second rider to sit on the rolled up tent.
Adding to this request, an inventory for the horse, again with penalty, must not be able to carry more than the player, in fact I'd suggest limited to 200 considering it will also be carrying player and follower, if over 200 the horse refuses to move.
Any modder capable of this, I'm sure myself and others would be very grateful, thanks for reading.