it should be very nice to collaborate. maybe we can create an extension for tinymce as it exists for fckeditor...
btw, i'm not using the advimage plugin, cause it doesn't let me the possibility to upload new images...
so, i tried with mceimagemanager, a plugin you can find at tinymce website, but it is no free cost
So, i have searched for another plugins and i found another one. It's called ibrowser and works quite good. Take a loot at http://pascal.vanhecke.info/2005/08/25/image-upload-plugin-for-tinymce/ if you want.
But i told before, i can't save the html for inline images in my xmlblock field...
Give me a week, and I will try to have something more to show. And the project section should be up soon as well, thats where I'm going to put it together with a search engine thing I scrambled together earlier this summer.