Marketpress custom theme organization

Hey all, long time listener first time caller...

As I start building my custom theme files for marketpress, is there anyway to put them all in a folder ie wp-content/themes/mytheme/mptemplates ? I've already got quite a few and adding more, just curious if this is possible? I'd love to be able to do it with all my custom templates in reality just to keep things neat and tidy. Something with .htaccess or some other funky trick I don't know?