So you want to set a billing date and then charge a pro-rated amount that first month? And what do you mean "upgrade"? You can move from one plan to the next a

So you want to set a billing date and then charge a pro-rated amount that first month? And what do you mean "upgrade"? You can move from one plan to the next and charges are pro-rated automatically for you. I, too, loath the amount of time we've spent on subscription/billing but I'm just surprised that none of the issues you've listed are really causing any pain for us.