O yes it does!
Good, slick playing surface is easier to play on and much less taxing than heavy, ploughed fields that often pass off as football pitch in lower leagues.
As for squad rotation, in a few weeks we play in FA Cup first round. You bet we will play out strongest team, no matter who the opposition, just to ensure we get through.
Prem or Championship teams in 3rd round in January. Unless it's against Arsenal or ManU, you know they are going to rest several key players and give fringe players a chance to shine. So the players rested will be fitter for the next league game.