It is pretty presumptuous to present your conclusions as fact and derive a suggestion from them like that. You did not back up any of your claims. Here are the things I'd expect to see in a rational, methodically supported argument.
Many monks vote just for their own XP
Provide proof of this.
Everyone can see that on Front page.
Explain how. Avoid handwaving in doing so.
Writing a single good node once a day already gains you at least as much XP as casting all your votes (even for a saint with 40 votes). Explain how and why that does or does not affect your argument.
Explain why the current situation is broken and how your proposition would improve it. Expound on how your proposed changes will affect the various motivations for voting or not voting extant in the current system. Make sure to examine your idea in the context of voting as a potential contribution to the site.
Makeshifts last the longest.