why bother. You're just going to wear it out again. This is what I would do.
Wet Okole from Hawaii. Wet suit material that stays cool in summer and has a little bit of cushioning. Saves your leather from more wear.
No one could ever tell they were seat covers when I had them on my Miata. Handy when I got caught in the rain.
I do however need to re-do the cushions for my GT3 seats. I'm thinking of doing alcantara on the doors, seats and steering wheel with some heavy twill in dark grey for the carpeting.