TWFirst, you make a really good point. That makes me wonder a few things: First, is it possible Boeing could shut down production regardless of the new YX order? Also, I was wondering why YX went ahead with the Boeing order when the 717 is in trouble and doesn't have a family with larger compatible a/c (unlike the A318, 319, etc...). So this got me thinking--always a bad idea!--okay, Airbus is out for the reasons I said before. But what about Embraer? Skyway absolutely hates their Dornier RJ's and is looking to dump them for something else. Embraer has a great family of smaller RJ's and is now expanding into larger, 717-sized a/c. Therefore, YX and Skyway could have all a/c (except for those classic 1900's) from the same manufacturer, with lots of different sizes and much more commonality than they have now. I don't know much about the economics of Embraer a/c, but I've been really pleased with them every time I've taken one.
Anyway, I love the 717 and it'll look awesome in a YX livery, but these are just some random thoughts on the subject...