This has been alluded to in several other topics, but I thought I'd make a separate topic to discuss the idea.
Basically, allow content creators to upload their packs to NeoLemmix, from where they can be downloaded via a similar interface to the style manager. They could be grouped/searchable by Author, Title, Difficulty, Size and therefore make finding new packs very easy for everyone.
When uploading, creators could suggest a difficulty rating (maybe from Easy, Medium, Hard, Extreme) for their pack which indicates the average difficulty of the entire pack*. Of course, if community consensus places a pack higher or lower than suggested by its creator, then this could be suitably updated.
It would also have the added benefit of being a continuous, reliable source of the most up-to-date version of any given pack. Pack topics would still be very relevant for promotion and information regarding the pack, as well as general discussion, replay sharing, etc.
*I'd even suggest that this be a sliding scale, since packs often (in fact, usually) feature a wide range of difficulty. For example, an author could suggest "Easy - Hard" for their pack, and it would therefore be placed in this category. However, feedback and consensus may indicate that the pack is "Medium - Hard", or even "Medium - Extreme", in which case it would be moved to that category.
The way I imagine it, if a player searches "Medium" difficulty, they will be shown every pack whose difficulty spans across and therefore includes "Medium". However, they would be ordered so that "Easy - Medium" is higher up and "Easy - Extreme" is lower down on the list. The list would indicate the pack's entire difficulty range regardless of the search criteria.