Judging by the absolute silence here, there is clearly virtually no interest in seeing this game run on the Atari 7800. There was some minor interest on the AtariAge board before one of their rampant village idiots showed up and killed the conversation. Apparently, he didn't like the idea of me prototyping the art and gameplay on PCs instead of on an Atari. Not surprising from that community really. I stay away from AtariAge as much as possible even though I'm a big Atari fan. There are some excellent people there, but they also have a pretty high percentage of trolls and jerks (and maybe I'm one of those jerks). If they don't want me making games for Ataris, I can live with that. It doesn't mean I won't -- it's just far less likely I will if there's no audience for it.
Anyhow, I'm bumping the Atari 7800 work down to a low priority on my todo list until 50 or so people tell me otherwise. I will probably revisit this prototype work on occasion to test various ideas and/or spinoffs, but I will be spending most of my time on games with higher levels of interest.