I absolutely would. I love flat grinds, and I also like hollow grinds.
The main thing though for me is that it would go against Spyderco's way of doing things, which is to give customers what they want, and customers' preferences vary widely. Without the great variety of products, Spyderco wouldn't be nearly as great, and not nearly as universally appealing.
And honestly, I think the whole "full flat grind" obsession is kind of overplayed. Yes, it is a great grind, and works great for most EDC tasks. However, I don't think it's been show to be somehow universally superior, and it does have some drawbacks, like a less robust spine than a hollow grind. Also, the performance has as much to do with other factors like blade stock and grind thickness as the type of grind they use.