Scorp, I vote for the mod's from Melissa and Wonka as well!
Now, your W is more than likely going to reject your proposal outright. Because SHE wants to be in control and SHE thinks she knows what's best for the kids. So prepare yourself right now for that. I don't think you'll be able to negotiate anything with your W based on what you've posted about her in the past. At least you can say you tried, but I'm afraid pursuing D is about your only option to getting more time with the kids.