I've had decent luck with homemade tortillas but sometimes the mixing, rolling and cooking process can get a bit long. Corn tortillas seem to roll out better than flour and don't have the stretch factor. Mission however, has just made my life better by introducing fresh rolled flour tortillas so I picked up a couple of packages in various sizes to see if they were worth it. There was a $1 off coupon on each package so I ended up getting about 90 oz of tortillas for $3.60. I figured even if they turn out horrible I'm only out a couple of bucks.
The tortillas look like rolled flattened pasta dough (yellow and a bit translucent) and take only 30-45 seconds to cook. If you cook them on a lower temperature and longer they end up tasting just like the cooked tortillas from the bag however, I like the fact that you now how control over how they're cooked. I'll be playing with deep frying them in their raw state as well.
You do have to be careful with them before they're cooked as they can break easily. Also they need to be refrigerated but I'm testing them in the freezer to see how well they keep. I'll update this after I have results.
Conclusion: Outside of the cost break (because of the coupons) I don't see a huge advantage to uncooked tortillas since they cook up to taste just like the cooked ones. I do see more waste because if you don't have that pan at the right temperature you'll burn a few. However, you do have more flexibility in HOW you want them cooked and they may possibly keep better than cooked ones but that remains to be seen.
What I'd really like to see is an uncooked real mexican tortilla made with lard. I know it's passe to want lard in your food but they taste great and most people don't keep lard around because it's too much work to render (or they keep that hydrogenated lard type stuff which isn't any good).