(just bringing it up....)
Short of the Independence (which, IMHO, is a pcp with a pump...), trouble with any kind of resurgence of them is its old, er um ah, <em>proven,</em>technology, and not easily setup for creative innovations.
Gross oversimplification of course, but we see limitation on almost every pumper platform out there: 39x/BenShers have a barrel soldered to the pump tube, 22xx/13xx/760 pumper platforms are underpowered, the 2100/2200 are internally complicated, and you get the idea (or not, but Ive run out of immediate examples...)
I'll only speak for me, but I think for pumpers to experience a reemergence, couple things have to happen: first is a new platform has to emerge. First it must be easily modded by folks on the kitchen table, with modular components.(and of course wildy moddable by those with the skills and tools:

I think we can use some of the current crosman offereings (breeches, barrels etc) but still a pump setup that generates the power it will take. Me? I'm one of the sedentary airgunners that doesnt llike to pump, but I do cuz I like pumpers. I will make the effort though if it gets me more power and or less strokes after charging the AC platform.
I dont really see a way around the AC bit, and that might be the key.
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