I've thought about doing this too (a "dev-venture" model), but unfortunately I haven't found the time to flush it out legally or look for good deal-flow. Maybe one of us should write a blog post about our concept in case someone else wants to execute on our good idea :)
1. Bravo, this is a really well-done content-marketing campaign. It's original/greenfield, provocative, interactive, and you intentionally made your idea list screen-shot so low resolution it's impossible to read unless we tune in :)
2. Broadly I agree with you open-sourcing ideation does a lot more benefit than harm. I have a similar list that frustratingly keeps getting rows added where I'd rather see an idea validated by someone else's execution than die on the vine.