Compare that to the drab audiences that have played Wembley throughout the years and the potential sale of the stadium to Fulham and Jacksonville Jaguars owner Shahid Khan can not come soon enough.
That was the one decision Southgate has made that has drawn any criticism, with some arguing that there was time between the end of the season and the start of the tournament for Lallana to get fit.
"Some of the individual situations like Danny and Raheem's have come up and have allowed us to talk about different things and support each other", the Three Lions boss said.
"If we got to the quarters, I think that would be a really good achievement", he added.
Southgate said he was delighted to have such competition for places. "The goal was world-class".
At the back too, players are forcing Southgate to think again about his starting line-up.The wing-backs in particular were excellent against Costa Rica, with Danny Rose and debutant Trent Alexander-Arnold showing that they've got the defensive nous and attacking flair to make an impact in Russian Federation.
Marcus Rashford opened the scoring after just 13 minutes, picking the ball up from 30 yards before driving a powerful shot past Keylor Navas.
Whilst with the England team, the Duke of Cambridge presented Trent Alexander-Arnold with his England shirt ahead of his England debut against Costa Rica.
His best chance came when Harry Maguire's flick-on wouldn't come down quickly enough, allowing Navas to rush off his line and smother the Leicester man's point-blank volley.
Southgate held off making any changes until the hour mark and left Harry Kane in reserve for the full 90 minutes as his side continued to control the game after the break.
That proved to be the final piece of goal-mouth action in the half as England ended their World Cup preparations on a high.
They completed their warm-up programme with a routine win at Elland Road, with Henderson returning to the starting line-up after sitting out last weekend's win over Nigeria because of his participation in Liverpool's Champions League final defeat to Real Madrid.
And his very presence sparked a marked improvement in Portugal's attacking thrust as he was involved in nearly every risky move the hosts conjured until he was replaced on 74 minutes.
The ill-fated 2010 World Cup campaign in South Africa featured players complaining of boredom behind the gates of "Camp Capello" at the Royal Bafokeng Sports Campus in Rustenburg. Algeria did not qualify.