^The obvious three that spring to mind, though perhaps surprisingly Wolves and Sheffield United are among the three most recent sides we've met in a league fixture that have gone on to play in the PL since, together with Brentford in 2013/14, 9 years ago. Southampton wasn't so long before either.
Granted Brentford, Brighton and Bournemouth are a more realistic comparison, with all three playing against us in tier 4., two of those squaring up against us in the basement division during the Trust-Munto period.
There are pro's and cons to being in the PL for sure, but if we actually got there and somebody then bumped this thread, I guarantee we'd be stunned at how deluded we were, no less embarrassed about what has been written than if you bumped threads from days after Trew or Hardy took over convincing ourselves that "we're in safe hands now", "we've got our clubs back", "it's being run professionally at last".
Definitely something to be said for preferring tier 2 to tier 1, especially if the lack of VAR is still in the equation and Fword and Derby were back in it, but tier 5 to tier 1, no - I'm sorry but it's the equivalent of that meme with the dog with his house on fire sipping a cup of tie telling himself "this is fine".