Thoughts about files reward (Patreon)

This is mainly addressed to my patrons on the higher reward tiers, but all opinions are valuable so it's open for all of you.

Because doing 2 sculpts a month already takes most of time I was thinking of what could I offer as an alternative to the 'game ready' files from the top tier. I know I stated that that kind of reward would only come much less frequently than the normal 3d sculpts, but I feel indebted because on my current situation any monetary support helps me greatly and I know how hard cash is to earn.

So I was wondering, for the months were no 'game ready' character is made what would you guys consider worthwhile I might offer instead. Perhaps a zbrush file of one of the sculpts? Generally its never a good idea to share source files because it's hard to control that people dont end up giving them or selling or profiting from etc, and only people with some 3d programs and knowledge would be able to open and inspect them anyway

Perhaps I could export the sculpts as an .obj, with loss of resolution and shaders I'm not sure. 

For now the tiers will remain the same but since this patreon is just 2 months old I'm super open to hearing your opinions and the possiblity of modifications!