ME TOO ! 120 and 4x5 --(35 mm--? since I won't be hand holding a 25 ISO film I'll opt for the bigger formats)--Ilford Delta ?---Love the Stuff!!
As long as we're all getting everything we want (Thanks, Simon!

how about packaging some 110 cassettes too? (SOME of us have 110 cameras that can be tweaked to handle ASA 25 film.) (The Minolta 110 zoom SLR for example, with aperture priority metering and fairly generous overexposure compensation)
Oh, and as for 220, I think I have a possible solution. How about selling "naked" strips of 220 film, which people could tape to the backing ends salvaged from other rolls of 220? (Or, made from leftover 120 backing, with a scissors and tape?)
I seem to recall reading somewhere that something like this was a fairly common means of selling 35mm film back in the '20s or '30s (and into the '70s or '80s in the USSR) -- spools of "naked" film, with a strip of paper taped over them, which were slipped into an empty cassette (and then the paper pulled out).
For 220, it'd need to be a bit of a different arrangment, but I think there'd be a market for people who'd be willing to buy plain strips of 220-length film sans paper, sans spool, in a light-tight pouch ("darkroom-open only" packaging, which seems to work OK for sheet film).
Could it hurt to do a trial run of a few thousand rolls of a single emulsion type to see how it would sell? Or if the beancounters are
that nervous, could it hurt to do a little survey? Maybe enclose a slip with some packaged 120 film, asking for input (would you be interested? how many rolls/year? which emulsions? please reply to www.________.com/survey)