Nice that you're thinking about tools that might be useful, but with this particular tool you're looking at something that could do with a few features just to perk it up a bit more. I might go as far as to suggest that you should seek some feedback from this community, I know you've had a general poor response, but if you seek it I'm sure members of this forum will be very constructive in terms of giving feedback. Many of us do it time-to-time on here, after all, it's very difficult to tell how other people are going to view it.
Anyway, the days before I had DBP, or heck, even DBC I still did some form of development, mostly crap stuff, but I used an old copy of PaintShop Pro, which came with an animation tool on the side, but the animation tool wasn't as well featured as PaintShop Pro, so I would do my frames in PSP and export them - it wasn't so bad as you have layers to play with too. Then I would just import everything into the animation program and everything worked.
So I think your idea could have some use, of course, you've got loads of other free software out there to compete with, but if you've just got something free on your site, you never know there's people out there who'll come across it and like it and then check out what else you've got to offer. And that's the point of free products in my opinion, to lure people to your other products. The pre-requisite of signing up to the forum will hinder that.
Though before the old Seppuku would download this, it would need to be more user friendly. I think something like the option to have a batch import would work, so you can import multiple images at once. Then add the ability to insert frames but also to move them about to customise the sequence, if you like - more artistic freedom, which is important for any artistic app.
