OP, do you mean you'd like the game to have an auto-generate option where you specify the quantity you want to sell then it auto posts at that quantity taken from a larger stack? Say I have 999 of something and want to sell 10 stacks of 99 each. Rather than having to post ten individual sales, are you wanting to specify stack size and post quantity in one interface so that you post all ten stacks with a single click?

I can see that being a nice feature for legit players wanting to dump a lot of excess stuff after gathering/crafting binges and don't think it would be an issue for bots at all since they post so quickly already.