Atm users cannot upload files. I have limited storage on my domain and limited bandwith. Use the thread to suggest files, or send me them by email. As soon as I get enough response I'll get a decent domain.
I agree with previous posters that your site would benefit from something unique.
I have two suggestions that haven't been done before, AFAIK:
1. A Custom Map Database.
A database of custom maps that are searchable by size, season, theatre etc. A screen shot of each map would be gold. Then players could download what they are looking for.
I'm working on an Excel database for standard maps (when I get the time), but I would think an online source for custom maps would be more popular.
2. A Custom Icon Database.
There are a lot of custom icons 'out there', for vehicles, infantry, trenches, fortifications, explosions, armoured trains etc.
I think a source for custom icons could be popular, particularly if it had thumbnails or pictures of the stock icon and the replacement custom icon.