Hey Alberto, would you mind adding a link to your personal blog post? I'd like to read the feedback. Thanks!
Sorry, the idea was to post as a comment, but forgot it. Here it is: http://blogs.perl.org/users/alberto_simoes/2013/02/about-the-grants-committee.html
I would strongly recommend reconsidering the maximum limit of grant size. This should be something on a case by case basis, as it currently stands many larger scoped potential grant proposals are dead in the water before they've even reached the proposal stage.
One simple solution for this is to create 'milestones' of $3000 or less (where milestone is a certain goal within the proposal/project, not necessarily a deliverable), but the entirety of the proposal is accepted at the get-go. This would allow for larger projects, and would probably assist in breaking them into manageable chunks at the same time. This won't work for every proposal, but it would be a good step towards larger grants.