Try some decent business class airport lounges and you'll see what LNER's lounges are missing. Decent coffee, proper hot food, relaxing music etc.
Given that LNER first class is directly competing with the likes of BA Club Europe on the Newcastle and Edinburgh routes, it's an entirely fair comparison in my view.
This is never likely to happen unless the entry rules for LNER Lounges are tightened fiscally.
As it stands you can get into the one in Edinburgh spending less than a tenner try that in a BA Lounge even with status it would be ten times that amount.
Can you imagine Talisker on free flow at LNER - they have a coronary if you ask for an extra blended Whisky on a Train.
What they could do is improve the offer to be on a par with Avanti - although even there's is tailing off a bit from recent experience.
Onboard if you have a Breakfast it should be Orange Juice, Toast, Coffee from a proper machine and the Full Fry Up
If it's Breakfast Rolls they should offer you two at least - if you only want one fine.
If you took the LNER Staff into the BA Lounge at Edinburgh Airport they'd have a panic attack seeing all the Breakfast Goods laid out and people helping themselves to whatever they want.
Having said that the Breakfast Provided onboard a Train is far superior to that in the Lounge whilst the opposite is true in the air.