"(actually for many projects somewhat gave up on entity beans for a variety of reasons)."
A very wise decision, in my opinion.
I have very little experience with Eclipse, but I'd be willing to work with you (or anyone willing to collaborate) on some plug-ins that might integrate with POJO Jenerator.
POJO Jenerator is itself a web-based app., so we'd need to identify a way of perhaps invoking a service-based api to facilitate this. I don't know.
In the meantime, I'm more interested in getting feedback on the patterns, techniques, and architecture of the existing generated code. Please sign up (Register button is in the upper-right - totally free, and I won't spam you...) and start entering objects and see what it produces and how it works. It would be nice to foster a discussion on the various aspects, and how we might make the tool better or even just more versatile, by producing additional generated code for GWT, Hibernate, EJB 3.0, etc.
Do me a favor (everyone): go to this URL: http://www.timechannels.com/EmployeeDisplayRecords
This is an example of what POJO Jenerator produces. Go ahead, enter some new records, edit them, delete them, etc. Play with it a little. Then ask yourself this question: how long would it take you to build that functionality, for that table, using your current tools, technologies, techniques?
If the answer is anything more than 10 minutes, you really owe it to yourself to check out POJO Jenerator.