The options offer with no percentage ("we're giving you a very generous 80,000 options"), always blows my mind!!! And often even without a strike price!
If you’re a VC harping on comp, spend your energy calling out frauds. Now that would be an actual public service.
It is entirely unreasonable to ask for a percentage of the company which can never be diluted by a future fund-raising round. Doing so just telegraphs that you don’t know how venture funding/corporate finance works.
Not only reasonable, but you really should. If they won't answer it's a bad sign.
I've seen this done, for what it's worth. Both contractually and ad-hoc.