Ramsdale is a weird case, I rate his potential very highly, like genuinely world class if he could put it all together. We've seen most parts at different times so in theory it should be possible.I probably rate Ramsdale a bit higher than you so we'll have to agree to disagree on how easy he it to replace even at a current level.
Guess it comes down to whether you just replacing for next season vs. the next 3-4. Seems to be a real focus on the team growing and developing together given everyone you're signing seems to be around the same age. Think I'd probably agree that replacing him just for next season wouldn't be the toughest task in the world, but that'd be the same for many other positions as well if age isn't an issue etc.
The problem is his mentality, guys just not serious enough as a professional player. Playing up for the cameras, bantering off rival fans, that painful interview with him and Stones etc with the regular clangers he drops certain other players would've been ran out the country for his antics.
He's been here two years now how much has he really developed in that time?