If I were Strauss and the ECB are considering changes for the 2016 summer, I'd be going public along the lines of this;
There are places up for grabs (subtext; 2,3,5). There are 4 county championship games before selection for the first Sri Lanka test and we'll be at grounds assessing players and looking at their form on bowler-friendly early season English pitches. Get a hundred in the first game? Great, go get more - show consistent form and you're in with a shout.
I do think you give Hales and Compton a chance in the SL series, if only to be fair to them. One thing is certain, either the communication to these players whilst they're with the squad is not allowing them to play their natural games, or the players simply aren't good enough. It was only recently that players like Strauss, Bell, KP, Cook, Prior, Trott were coming in as debutants and scoring lots of runs from the off. But then maybe they were a class above the players we have now?