Heartbeat was never a favourite of mine it was very successful. At first it was on Fridays then it switched to Sundays and became a hit. I thought Mr Simons passing was worth mentioning (Right now I'm watching Inspector Lynley with him in!)
Heartbeat should have been axed years before it was really - it was just going through the motions once it got stuck in 1969.
They should have kept moving it on in time, like Call The Midwife does. Having it move into the 70s would have given the show newer and different things to do than being perpetually stuck in a 60s limbo.
And even though it was technically stuck in 1969 for years, it was a sort of mishmash of different parts of the 60s happening at the same time. So you had things like man landing on the moon and steam trains on the railways co-existing.