The old customers should be happier, the developer might be able to spend more time on future updates.
Or the developer might have to spend more time on support now.
I have no customers who were angry about this. Not one. So this fear I had of upsetting customers who missed the discount appears to be unfounded.
What percentage of people actually get angry at this sort of thing? It's insane for luxury items -- either you value an item at the price it's listed for or you don't. If you don't, why are you buying it in the first place?