Honestly looking back I enjoyed Cowboy Bebops ending because it DIDN'T resolve anything. Seriously I don't need stories to tie everything up for me in a nice little bow. I want SOME resolution, and we get that with Spike dieing but I don't need every little thing spelled out for me.
Sure some of those "end credit short scenes" kind of endings are nice, but it doesn't fit the mood of Bebop. A dark, bluesy ending fits well.
Sometimes all you need is an end.