When is enough enough. When is mainline going to figure it out and realize that it makes sense to purchase CRJ 900/1000's and fly them in-house. Why would they put 100 seat routes out for bid? It makes no sense! You see US Airways bringing EMB-190 in-house to close the gap between them and the regionals but when will others follow suit. I understand that there has to be an a/c that fills the gap between the 737/320 and the CRJ but I always thought/hoped that they would be mainline.