option to rotate screen 180 degrees: should be doable; I think the ILI9341 has a command to do that without flipping the data.
bluetooth: not yet, maybe V3 ;)
display size: base version will have a 2.8'' display. User can swap in a 3.2'' ILI9341 display (drop in replacement) or a 4'' ST7796S display (pending firmware support). We are likely going to offer a version with 4'' display, maybe a month or so after the release of the base version.
jog switch: it's already the same part number as the one used in the -F, just without the nipple installed. Using the jog switch is optional as all features can be accessed from the touch screen.
price: most likely similar to the -H, so around $60. I don't know where the $100 BOM cost rumor comes from but it's false, the BOM cost can't be anywhere near $100 if this is to retail for $60 ;) There aren't much development costs because OwOComm sponsored the initial R&D on condition that all designs be open sourced.
I've attached the uncalibrated load plot. The performance of the baluns deteriorate rapidly above 3GHz so this is going to be marketed as a 3GHz instrument rather than a 3.5GHz one. On this particular unit the nastiness starts at 3.4GHz.
OwO
