Impressive post you made there but I have to pull you and whoever else up on this part.
Since Martinez took over... (BM being before Martinez and AM being After)
John Stones
BM Promising young lad from Barnsley, predominantly played at right back with no top flight games.
AM England regular subject of a big money bid from one of the "biggest" clubs around.
Ross Barkley
BM A bit of an enigma who could barely get a game at Sheffield Wednesday. Was in and around the first team squad at best.
AM A key player for Everton and a regular England international.
Romelu Lukaku
BM Always a goalscorer but lacking in his all round game and hung out to dry by his former manager to the point where he was no longer wanted by a "big" club
AM Still a great goalscorer but with a much better all round game. His touch has improved massively (ignoring last week...) and has value has doubled. Now wanted by "big" clubs.
Brendan Galloway
BM Playing on and off for MK Dons
AM Made a name for himself at the start of the season and showed that he can fill in at left back. His stock his risen under Martinez.
And thats before we look at the less obvious young players like Besic who had the worst possible start to his Everton career imaginable, Robles who is coming on week by week and Deulofeo who was on the scrap heap in Spanish football.