FWIW, I still stand by the current LOI being about as strong as it has ever been in terms of strength and depth, there just isn't 1/2 stand out teams running away with it, the bottom/middle clubs are the best they've ever been. We've the current 5th and 7th placed sides playing European playoffs next week. Europe is still a cup competition after all, so we will win games we shouldn't, and lose ones we should, all the time. The Derry result in Gibraltar is horrendous, but tbf they did dominate them at home with 10 men for over an hour, so there was a clear difference in ability, I'd blame coaching as much as the players for what's gone on at times. They're a bit of a weird team of LOI superstars closer to the end of their careers than the beginning.
A lot of football comes down to timing/luck and making the right move at the right time. It feels very common for Irish lads to get injured right when they move over, so I do wonder if one of the biggest issues is just how big and strong the average EFL player is, and the load that is expected to be put on their body. There's about as many lads going over and being successful as ones that aren't, and with different moves come potentially different results, but we will never know.
Coming home isn't always necessarily a failure, as said in many threads here recently, some have come home for family reasons while they still had offers in the UK, or because they're now being paid very well while getting to live near family, many people have very different priorities in life. Chris Forrester/Graham Burke are examples of players who came home years ago for those sorts of reasons, whatever about the younger recent moves.
As for Curtis, he was a center back originally, and ended up playing full back for Pat's because they didn't have any if I'm not misremembering things, maybe he needs to return more centrally now, I'm not sure if he's good enough to get away with not being any bigger thou. He's always been a strong athlete for his age, but there's only going to be more expected of him moving forward, it has been the guts of a year since he's played regular football, so maybe he just needs time, I definitely wouldn't be sure that Sheff United were the best place for him to be in the 2nd half of last season.