Thank you for the suggestion.
LSWS' architecture is a single process event-driven non-blocking server for the maximum performance and scalabilities, what you described cannot apply. suEXEC should be good enough as we only need to worry about the security of CGI script, for static content it should be fine to be served from one process.
Our VPS pricing is very affordable, should be affordable for even small hosting companies, and the benefits should be worth a lot more than what being paid. Our past experiences tell us that offering something free will not help much.