Hello Marcin,
I am the author of this discussion thread, and I welcome you here.
I will be happy to buy you one of the HSGMII copies as soon as they are available, and if possible the one with serial number 00001 :-)
If the output to the router is 2500BaseT Ethernet copper, I won't have a problem with that.
I even have the idea that it will interest a number of us.
The pillars of the thread have pointed out the modifiable elements that would be useful to us.
If your product is a solution to our problem (enjoying 100% of the bandwidth that our operator sells to us, and not just 50%), then this discussion thread is open to all your concerns to make it the product of our dreams.
This objective is already attainable, but this 2.5Gbps synchronization is so delicate to shape, that for the moment, those who have succeeded are a handful, because it requires time, a lot of know-how, and many tests.
This interaction would be mutually beneficial, and if it is reliable, simple, efficient, then the customers will be numerous in France, and in Europe.