My 2-cents...
So much energy in this thread, but I know its hard not to share viewpoints and ideas.
Anyway, I had always been a big fan of API back in the days of Houdini. API allowed Josh, Dave and the rest of the early team to shine and put their personal thumbprint on the final goods. The $6K purchase experience was exciting and the machine stood tall next to my Starn machines. The net result was a beautiful machine that many people loved, and support was stellar. API had proven it was a real (albeit small) pinball company and continued to produce a few more titles using the standard business model. That business model looked like committed employees/production capacity/leveraging skills/capturing creativity/building quality/customer-centric support, and those new titles had an audience, many liked them, some did not. That is the pinball business... since it is all about personal taste.
I view GTF (slightly) and BBQ (definately) as transition products. They were struggling with what to do as a company when they grow up, and seemed to get very tactical, without much concern for strategy. Those products were almost 'pet projects' built for reasons other than traditional business plan 101. That was the end of their standard business model...
Now that FunSup (Fun Supplier?) has formed, it appears they have decided to be a pure contract manufacturer and as Josh clearly stated above, anyone can bring their idea to the table and then fund the entire process. FunSup will likely take no financial risk, but what they offer is a leased factory space with some build equipment, tools and test fixtures that could be staffed for any particular project. They may have some sourcing capabilities for the BOM parts. They may also still have access to a list of Distibutors that may be willing to play. (Not sure if the API vs FunSup legal ENTITY change allows the EXISTING disti contracts to remain valid). What they don't offer is any existing in-house expertise. If the project is already engineered fully, then it takes less contracted engineering talent to be brought in. If the idea is drawn on the back of a napkin, then it will take more talent to be contracted in. They would get this contract to build, and then source designers, engineers and logistic folks to do that project build and ship. (Not sure who would do the after-sales support, etc).
Could this be the pinball-specific CM to bring homebrew designs to life? Well, if a few hundred machines could be built and PRE-sold, it probably could. There are enough designers, engineers and production people floating around chicago area, etc for the right price. So say one of the homebrew makers start showing a strong title and executed machine at various pinball shows, and they find a groundswell of say 400-500 people at those shows willing to pre-buy a title. Could a production run of those machines be a successful project? Maybe a perfect use of Kickstarter... Maybe, but the after-sales support issue still creeps up in this scenerio and topics like replacement parts and software updates becomes an important consideration. Could OPEN-SOURCE be part of the answer? Probably so. Open-Source of the 3D playfield gadgets, the metal machining detail and CAD stuff, the artwork, the software, etc.