While the merged categories are definitely moving in the wrong direction, you can do fancier searches and create a bookmark for them (at least, here in the US version). I have bookmarks preset for Bronica, 77 mm filters, push-on (and slip-on) filters, etc. to reduce the amount of stuff to wade through. Like some others, I have used ePrey to build up a Bronica SQ-A outfit, added a Yashica 124G and an Ercona II to my user collection, as well as picked up lots of miscellaneous odds and ends. For a hobby, I couldn't consider most of that financially sensible back when the stuff was in current production.