Question is if the chips continue down the Spondoolies like path there would be no "simplicity" left since all future chips would be geared to a larger more powerful board. So that dead ends this project unless you are willing to adapt to those types of chips. No one is going to be able to compete (those who would be willing to sell chips) with Spondoolies if the trend continues as they seem to be ahead since they have the team. It is doubtful that a new Avalon or Bitmain chip will be able to compete given the claims of Spondoolies next chip. Meaning this is probably the last chip iteration from Avalon and Bitmain will definitely be very careful not to finance a losing chip.
Which likely means you have about less than a year to build on the chips that exist.
Entirely possible, but I think maybe a little more unlikely than you make it out to be. Spondoolies is doing very well right now but several of their design decisions really up the price on any design using their chips. Sure, right now they're cleaning house with their rockerbox stuff stacking up well against an S5 (if not really the BM1384), and everyone loves them as their support is second to none- but the required components on a Spondoolies miner besides the chips are typically more expensive than a design which uses smaller chips with standard protocols (basically all other companies).
We'll have to see if they continue killing off the competition, I can't imagine that they have lower parts cost per hashrate. Then again, the quality support they provide goes a long way.
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novak