Commissions & posting high(but not full) quality versions (Patreon)

Commissioners past, present and future, what are your thoughts regarding higher res versions of a completed piece (say, 50~60% orig size, jpg) being posted in Patreon packs? Public/gallery postings would still be relegated to being 15~25% the original size as it has been before. The full un-resized TIF versions would still be limited to the commissioner .
I'm wanting to get opinions and such about this and didn't wanna step on any toes by just changing things outright :)