Anyway, lets break down our options for a moment.
'top full-szie 2x2' entry:
cons:
* requires expensive extra deep/long IDC connector, hard to source, single supplier
* vertical HDMI connectors sticking out quite a bit to the front
* 'base' quite 'high' (top-bottom)
* vertical HDMI connectors have many connection pins, but put a lot of strain on the connector
pros:
* easily fits 4 connectors
* standard leds easily face forward
* strain on the connectors is more equally distributed?
vertical HDMI connectors
cons:
* increases height (makes the breakout fat) and sticks out further due to their longer length
* leds sit next to the connector, making it harder to identify 'is it the one to the left or right'
pros:
* makes all connectors fit nicely
mini HDMI connectors
cons:
* cables are harder to source
* connections are less strong due to the more fragile connector
micro HDMI connectors
cons:
* Much harder/more ugly to route
* much more fragile
* cables not the easiest to source (but certainly possible)
full HDMI connectors
pros:
* easier to route
* much more robust
cons:
may not fit on non-mso5k
(I'm sure we can increase and work on this list more :p) but for now, I think just doing two layouts, mini and full boards. We can always do a 3rd or a 4th too :p the breakout boards are after all the easiest to do. If for example you have both an MSO5k and a DSO900, you may get one each or just use 2x2 one