Some possible filter options are:
1) Sort by faction. (ie. Blufor, AAF, Redfor, ...) This can easily reduce the viewed list by 70% or more once APEX/Tanoa is released.
2) Sort by color or type of camouflage. (ie. Black, Tan, MTP, Desert, Forest, ...) Again, this will further reduce the list by 70%.
Also add the possibility for apply multiple filters such as sort by faction and sort by color or type of camouflage.