I was involved with their introduction and by then the SUB's/EPB's had been well past their sell by date, as much as I liked the comfy (if dusty) deep cushions on both those types and the compo's before they were gradually removed for reasons we all know about. A sign of the less than pleasant times that were on the increase back then.
Was a tad surprised that 5868 was repainted latterly, as long since, SWR (I am very reliably informed) had been on a zero spend regime for anything other than very essential matters, so may be 5868's repaint was partly done on a voluntary basis, knowing that some in the industry will still have a soft spot for them - I don't know?
The repaint in to red during my time, was probably the best (quality/longevity wise) that the fleet had seen, but didn't come cheap.
No need for any apologies. Everything in life comes to the end of its usefulness in time. One just has to be pragmatic and move on perhaps!