What would be nice: a Logistics Manager type of bag that's slightly longer (to take longer lightstands - if it can be long enough to take a collapsed lightstand with a small head on - that would be great) with bigger, sturdier wheels, more rugged construction, with a compartment sized for your typical 17/18 inch laptop - say an MX17 - and associated cables/chargers for knicknacks. nice if you can design the laptop compartment that it can be used as a shade for the laptop so you can still see the screen clearly on an outdoor shoot in broad daylight. Everything internal please - no need for the gobbledygook straps, fasteners and what not. Good zippers and carrying handle, water resistance like TT's, Don't care about style as long as its black, zippers, stitching, fabric are all good. Prefer a soft case over pelican - which has small dinky wheels anyway, and is quite wasteful in terms of the space taken up by all that foam. The long lightstand case with red trim (which I also have) which every online shop (tagotech, studiooutfitters, etc.) sells has lousy wheels, a lousy "handle", and has zippers that jam and do not inspire confidence. Essentially a longer off-road version of a Thinktank Logistics Mgr at about same or lower price - S$600-700 is alright as long as the warranty is just as good as TT's.
Alternatively, a smaller dedicated rolling lightstand bag with big solid wheels, sturdy plastic housing around the axle area of the wheels would be nice too, maybe holding 3 or 4 lightstands. Softcase please. $300 I think is fair. Built in cable lock to tie it to stuff will be nice but not needed if it takes up too much space.
Current bags are a TT Airport Takeoff, Navigator, UD 70, Bazooka, Lowepro Computrekker, two toploaders, 3 Nova 5s - mix of lens cases and various smaller bags, TT and Lowepro belt systems.