I cannot believe people are upset that Blackpool is putting all its eggs in one basket by allowing or welcoming Jet 2. Blackpool would basically have nothing without them.
People used the same argument about 8 years ago when easyJet started from Liverpool saying that Liverpool had all is eggs in one basket. Again, Liverpool would have had nothing if it wasn't for easyJet. Look what has happened at Liverpool we now have two eggs in one basket!
Go Blackpool, and grow! even if it just with Jet 2 and a sprinking of Ryanair!