The Premier lagged behind massively as well. On the 4000... my old boss had both on order, PRM1 and the 4000. They offered him an 800 as intermidiate solution with a fixed return price etc. He took that aircraft, flew it and when the initially agreed lease was over the 4000 still wasn´t certified. So he wanted to continue the lease, but HBC said 'no way'. The guy then cancelled the contract, bought a CL300. After having been a Beech customer for many years...several KA200, 350, a 400 and said 800 over more than 20 years. The PRM did not materialize 6 years after being ordered, so he bought a CJ2... if Beech worked like that with not just him, then I understand why they are going down the drain. The communication and customer support was also...sort of non existant. Cessna does a way,way better job in this respect.
I fly KingAirs since 1990 and I always loved the airplanes. Its a shame.