We would need solder stencils with and without the ASICs in place as I bet a fair number of boards will be assembled without the ASICs and it would be better when placing the ASICs on unpopulated boards to have clean pads instead of solder puddled up on the pads.
When I get further along I'll be testing my computer cutter with synthetic papers to make stencils. I've had this thing for a couple years and never used it hardly. I have read online this works quite well for short runs, and at least one vendor sells this type for $10 each. Real stencils (steel) are quite expensive and would be worthwhile for someone doing a larger assembly run (these can be had for $70 in China).
With this cutter method you use postscript output to create the stencil so I can provide such a file with/without ASICs later on github. If this cutting method works well enough then I'll either include a stencil with each kit order or make it an optional item for a low added cost. A stencil without ASICs could have a separate footprint of a single ASIC to be used individually.