The arrangement had always been a "group buy" as the SUBJECT of this thread suggests. All investors own all machines equally sharing all the risk between everyone.
I can not imagine the extra work load determining who's is what and when and how much.
It's a GROUP BUY.
I dont want to take a side because i think both views have advantages but it was planned as a group buy to buy one avalon machine. Then another one. At least iam thought all the time i put my money into to buy the one machine.
Maybe in future groupbuys this has to be specified more exactly. Im ok with having a part of all machines because it spreads the risk in case a machine is broken or something.
You have a point, but the problem is that this makes the task of division of mining revenue incredibly complicated for coinhoarder, or whoever is tasked with that duty. Also, what happens when people trade shares? And as people have already mentioned it spreads the risk, so that if machine #5 is shipped and hashing before machine #1, everyone is still earning shares.