Not really. Yeah, none of the options are great. I'd prefer a nominal payment TBH, but many people would probably not be keen on that (as expensing it could be an issue)

I didn't realise you were giving time away on FPGAs. Probably the best option would be to have a lighter preview that just shows the UX but not simulation, for anonymous users.

Unless you really expect your business to be mostly high-touch sales, giving your potential customers as much information as possible before you demand anything from them is probably the best strategy