I have a few suggestions;
1. A cool feature for the downloads system would be development blogs. Modders could post information about upcoming releases and such. I understand that you could just comment but it would still be a cool feature.
2. A public interface like the filecp except logging updates, new submissions, comments, etc. that would be per user. A subscribe feature would be cool so you could keep up with your favourite modders.
3. There should be more file moderators. There is a lot more files being submitted then previous days and some people are being crushed from the pressure (see Space Guy's post @ Bot_Events (v1.1) in moddification discussion. Like he mentioned, some of the moderators only ever approve their own submissions. I realise that this is the Blockland community and there are few who are responsible enough and actually know modding well, however there are some (Chrono, Resonance_Cascade) who may very well be fit for the job.
4. I think it would be better if you changed the current version labels to "Submission Version" and add a new label called "Real Version" field that the submitters can change. It's confusing for some of my mods as my version is completely different to the submission version.