1) patches welcome 
2) I just make the mods in the model. If I want a custom file naming
scheme, I typically override #full_filename.
It is easy to write your own, but after awhile you start running into the same problems over and over again. Thats why I wrote acts_as_attachment.
Well, I also wrote it to store files in the db (which file_column doesn't do). It didn't take long before I added file system support, which is what I primarily use now.
