I concur with this, except the 'small' I think TinyFGPA BX and Fomu take size factor too far for many makers, newbies and educators..
I don't see Analogue capability as an add on, although I can remember when many microcontrollers didn't have ADCs! My opinion is that dev boards (FPGA or not) should support mixed signal unless it is designed exclusively for a niche application that has no analogue requirement. Thus It will be batteries included on these boards as far as ADC goes..
I cannot make it exactly the same but am looking to keep certain design characteristics very similar. Due to cost and reduced BOM however at this point it will not be 2 separate boards (i.e. not carrier based). In the future this could become possible, but that requires some things to change on the supply and manufacture side.
This is tricky, I dislike the term cheap BTW, however I love value for money. you mention some other products, lets look at their pricing :
TinyFPGA BX $38
BlackIce is $55
IceBreaker $69 !
What sort of price would you imagine?
BTW I love PMODs so it will have plenty of those.. Many folks new to FPGAs come from outside of electronics so not having to solder can be a real benefit and Pmods make trying things out much simpler..
Given what you think of OpenMV, you will love what we are going to do with the higher end BlackEdge products