Hi John,
Should this all be one library?
No, several smaller libraries would be nice.
Should the module naming scheme be changed?
Yes, MissingH is not the place to put these things. You run the risk of more name clashes, but thats ok.
Could, and should, any of this be integrated into the Haskell libraries project?
Yes, some should, but only after careful review and being split up. Assuming the Haskell libraries project is still something that should be continued, once Hackage is up and running suddenly the distinction becomes minimal. A few of the functions should be picked out and moved into base, where they truely are missing.
How could greater community participation be encouraged, while still encouraging quality control?
Make sure more people know about it. I want to start using MissingH but never got around to it, by continually telling me how great it was I'm sure I would have started using it earlier. I have various bits of general libraries strewn around the place, which I might contribute to MissingH. Thanks Neil