Maybe the DIY+ arrangement can be a limited partners type biz situation, with the filmmaker/distributor as the main partner & other distributors as secondary partners (even if they do more work, spend more money & subsequently make more money).
One of the key benefits of a DIY+ distro situation is the consistent availability of the film to the audience. If any one distributor (lets say a secondary partner - theatrical distro in Texas, for example) does not or cannot provide the film to an audience member in the preferred format, space & time, then at least the film may be available through another distributor in the DIY+ arrangement (in this case the main member of the group - the filmmaker/distributor, can perhaps make the film available to the audience member through a sale of a DVD through the filmmaker/distributor's website).
DIY distribution is a different level & scale of work - not indiewood distro & not Hollywood distro, and a given film can be brought to the market from any one or through all three of those avenues. It is a good time to be an indie filmmaker, specially a DIY distribution inclined indie filmmaker who is open to working with others, because at the moment distribution options are many for such filmmakers. Indie filmmakers & distributors will & can be as creative as the best films in that field in order to accomplish the availability (to the audience) & profit (to the filmmakers & distributors) mission.
Note 1: Concrete examples of DIY+ situations would be Date Number One screenings #8, 9 & 10. In all three of those instances I the filmmaker/distributor & the screening venue worked/work together for the benefit of both parties.
Note 2: On the DVD front, Lance Weiler's Head Trauma may be an example of a DIY+ type arrangement: Weiler is retaining ownership of the film while the DVD gets sold nationwide through another distributor. Head Trauma also seems to be an example of relatively wide DIY distribution (15+ cities theatrical!), read about Head Trauma at Indie Features 06.