Any airline prefers to have a mixture of experience, as it will reduce bottlenecks. If all pilots have the same number of hours they all need the same thing at the same time e.g. a command. A spread of age is also desireable.
Anyway, be happy to join easy although it is on the tractor
The fixed roster really IS nice! The money is not bad either after the 6 month initial period. Bad news is that you will get either LTN, BFS or NCL but you can apply later on for a type conversion if you prefer other bases without any pay cut. However, you will be bonded though.