I'd like to be able to relate feature request to each other, so that features that are not similar but still are related would be more easily discovered both by users and internally.
A feature that does not have many votes might still be easy to do if we do a related feature.
A feature might get more votes if you can easily find it because you are a voter or requester of some other request that is related, if you have an easy way to find related requests.
I would add the "related" link for end users as an option in the suggested posts when posts are created.