i think there is potential in several existing mods, unfortunately many are being developed by one or two people and could use the help instead of more ridiculous fragmentation of talent into mods that will never be released and have nothing to set them apart in gameplay or style except "these ships look really cool"
an "idea" for a mod is worth about as much as dirt. it would be neat to have a mod based on a variety of IPs but there are only so many people that are already struggling to get their mods out the door.
edit: also, model replacements are not a "total conversion", a "total conversion" would have significant changes in gameplay, and while I'm sure you could fashion quite a few out of how ships in EVE work, that would probably be duplication of how other mods with similar universes' systems work.