This is so old now. Sorry, but with respect, we we talking about the same thing in 2019.

The lack of any 'priority' is a known issue. When I bag drop my CE/J luggage you don't even get a 'priority' tag and they are just attached to business bags to make the customer thinkthey'll get priority. As I said in many other threads, I flew 1C the other day and checked in at the same time as the lady next to me in 1A: at LHR our bags were close to being last to arrive.

Bags are often packed based on how soon you check-in I find. So if you check-in early, your bag is packed first and comes off last. Check in later and it's one of the first onto the carousel. Baggage handlers simply do not have the time to look for and pack priority bags separately and baggage handlers outside of the UK don't even know what those tags represent.

Basically: priority is a myth.