I'm actually a first-time case maker, but I'm already noticing several things that I think you're going to need help on.
1. I think it's a bit early to announce the project just yet - planning is the easy part, but a lot of times, people start planning and get bored easily, then quit. It's already too late of course, but usually people wait until at least the script for the first (or only) case is complete, from what I've seen.
2. I'm noticing that your post, and especially grammar, is definitely a bit disorganized. Of course, I'm not judging you for that, but I'd absolutely recommend getting help from a proofreader or two - they'd be able to help you with your grammar and organization so the case looks a lot better and doesn't feel off-kilter.
3. Read this
post so you know how to format your post so it fits by the AAOnline rules.
I do think the premise and idea are nice, especially since I enjoy games that take alternate endings from games in the main series (like The Dragon's Turnabout plays off of an alternate ending to DD, and Conflict of Interest plays off of an alternate universe to the trilogy/AJ.