Hello,
I have tried a fair number of file navigators over the years and I am always on the lookout for new ones, since MS for some reason chose to supply a pure crap "explorer" to go with Windows out of the box. The one in XP, though limited and eminently improvable, was the last one worth having.
I just stumbled over Multi Commander today and I must say it's one of the most promising-looking efforts I have seen so far. It really is. It seems to have most of the features I like to see in a file manager.
Then I have to rant a little about a couple of things I think need fixing:
1. The Favorites/Bookmarking function. I see this is already in the list of suggested improvements. Very good to see it as number one on the list. I'd just like to stress that it's very important to fix this, it's the most glaring gap in the tool at the moment imho. The existing "Hot Paths" feature is useful, but with only 10 paths, non-editable and a flat structure it is too limited (apologies if I am missing something). For a bookmarking system worth its salt it's essential to have editable bookmarks in a tree structure, with similar functions to any browser out there. I don't think it's essential that each and every one of them be accessible from an individual keyboard hotkey, sticking to this philosophy is just going to put unnecessary limitations on your design.
2. I see some "Swenglish" here and there, and some language inconsistencies that should be fixed eg. selecting "Vertical Layout" in fact selects something that many people, myself included, would call Horizontal. Maybe some people see it the other way around. I'm not sure which camp is in the majority. In fact, this difficulty could be neatly avoided by having a toggle function instead: "Toggle Vertical/Horizontal layout". That would always be correct whichever way you look at it.
3. This is a function I would use once in a blue moon (though we did in fact have a blue moon the other day ha ha), thus low priority and not a big issue: The animation that happens when changing View->Split size to another setting can be a little annoying. It was very slow and clunky-looking on one computer, but quicker and OK on another. I'd prefer to turn this animation off. (apologies if it is already possible to turn off, I haven't checked through everything yet)