do you think there was a specific reason the layout of the avalon boards is what it is? ie groups of 10 in larger modules.  I would have to wonder about why they didnt go for one big board instead of groups of small boards.   Not having the data sheet and limited information on how these chips work, I think it would be pretty perspicuous to think large chip boards are going to be designed and working before the smaller chip count boards.     

Im not trying to say one is better then the other, as I honestly have no clue what the "best" design may be.  I do hope that there are multiple board designs with different chip counts so a greater number of people can get involved.