1) Is there community interest in these features becoming available?
2) Does anyone have any suggestions for other AI plugins they would like?
3) Can Jorrit or anyone else involved please explain why the GSoC 2007 AI project never made it into the CEL source?
Quite a bit late to answer, but well, for the records...
I won't answer 1 & 2 since you've been selected for GSoC 2009 AI project
For interested people, also check the CEL mailing list archives
For 3, well, the GSoC 2007 was merged
in CEL trunk.
If you meant GSoC 2008, there simply was about nothing to merge
, the guy disappeared and the project failed