Dave wrote:I'm going to make a polite suggestion/request at this point. I have a long history of not finishing things. I have crippling ADHD. If you gently and consistently ask me about it or raise it in my awareness, it will stay front and center.
Although for a different controller, we see encouraging ethernet figures for a RAM expanded QL without (S)GC here:https://qlforum.co.uk/viewtopic.php?f=2&t=330&start=30#p39849
So I think a straightforward RAM expansion with CP2200 ethernet would be something that can be finished, and also offers good value.
Not every retro QLer can/will get a (S)GC, but almost everybody needs RAM expansion, e.g. to decently use QL-SD.
So if that RAM expansion comes with an extra goodie, but not much higher costs, I'm sure it will sell well. I'd definitely buy one.
You already have existing circuitry for both the CP2200 and RAM. That's a good starting point. To reduce risk of not finishing the card, you could omit optimizing it for (S)GC.