Jim, here's a thought. Why not sell a 'beefy' version of the SereneScreen Aquarium? All this talk about limitations.....FREE YOURSELF - and have fun!
What I'm suggesting is - no new 'code' - per se. Just take what you've got and 'beef' it up. Offer it on the website as an 'ultimate' acquarium for fast PC's only. Call it whatever you want but distinguish it clearly from the original. I guarantee a GOOD number of registered users like my self would be more than happy to pay ANOTHER $22 for a version not limited by file size or 8mb grafix cards.
Go ahead - add in those hi-res textures. Add another backgroud layer to the back (or two!!). I'm sure you have several things you'd love to see - that would be super easy for a man like yourself to just *poof* make happen. You know - a lazy weekend spent prettying up what you've got and selling it as another product. ...might just pay for a vacation that you will surely need after all that pesky 3D background coding.
...tempting? I'd buy.
Anyone else?