Hi Nicolas,
I hope you're wrong. 
I hope to see a new Geophysic next year.
But an Extreme version, in a huge case (large and thick), would mean a wasted year for me.
I'd like to see a reasonable size (40 to 42 max, 38 or 39 would be better), would be happy to have a Compressor crown or any other device that would allow at least a 200m depth resistance, and a simple watch (hours, minutes and a central second)!
Let's hope
Cheers
Dje
ps: by the way, interesting expedition!