I struggle to see what benefit we have retaining him for the WC because there's a real trend with us of not being able to overcome the better teams when it counts. That's basically what England have always struggled with bar Woy's terrible tenure. I keep seeing people bring up the fact we got to a semi and a final as a reason why we're doing well but, if you are going to use the stage of a tournament as a barometer of success, then you also have to factor in who we played in order to get there. This is our major tournament run for last WC and EURO:
Tunisia (2-1 W), Panama (6-1 W), Belgium (0-1 L), Colombia (won on pens), Sweden (2-0 W), Croatia (1-2 L), Croatia (1-0 W), Scotland (0-0), Czech Rep (1-0 W), Germany (2-0), Ukraine (4-0), Denmark (2-1 W), Italy (lost on pens). You can include the Belgium 3rd place playoff loss as well if you value that game, personally I don't.
If you consider Germany an elite team, which is generous, we have only beaten one elite team in tournament football under Southgate and been beaten by Belgium and Italy (arguably add Croatia in '18 as well at the peak of that generation). Our draws have been a real blessing as well - WC we avoided every single big team bar Spain and Croatia (Brazil, Argentina, Belgium, France, Portugal all on other side) & in the Euros we avoided every big team again (bar Germany). Contrast that to someone like Martinez with Belgium who we always think of as underperforming given the team he has but he's beaten England (WC), Brazil (WC) & Portugal (EUR) in tournament football and been knocked out by France (WC) and Italy (EUR) who both won the tournaments. Southgate has had massively favourable draws, home advantage and yet we always come unstuck against the first 'big' team we play.
Twice we have gone ahead early in knock out games against good teams and twice we have then sat back, ceded control of the game and lost - this is a mentality issue and it comes from a manager who is not experienced at the elite level (as a player or coach) and whose priority is to set us up with the aim of not conceding. Add that to the questionable game management last night and just think it's a waste of a tournament to leave him in control. Where's the harm in some fresh ideas and the new pressure/drive that a new coach brings?