Sometimes I find that when I download some of the larger game files, they are double archived (i.e. old versions of the split rar file, 001, 002 etc.)

BEFORE you say how to extract files (especially 001), let me just say that I know how to extract rar's and combine 001's (the only [Split] archives on the main site)

I introduced an 001 issue before; in short is was a problem caused by renaming of the split files that caused someone downloading the file to find that it has no extension after combining (therefore unplayable by emulators even with a valid extension); an example is one of the copies of Luigi's mansion here: http://www.emuparadise.me/Nintendo_G..._Mansion/66663

I think a single archive would mean there won't be many problems such as the one mentioned. It would also make the site look like it has more original stuff rather than ones that come from other sites. I know it will be a major effort on MasJ's side but it's just a suggestion.