First of all idk what modders are capable of, so sorry if I'm requesting something impossible.
Something that has really bothered me in Skyrim is how high the low-worth item sell-value is. A simple fix I thought up would be to make any item value under 300 septims sell for 50% less. Now this would kill two birds with 1 stone because it would nerf Sell-spam while buffing the speech tree, making it more useful, which I personally think could use a buff (even in enairim, which is my current setup).
Thanks for making it this far (ik it was a lot to take in lol).