transfer window thoughts

so how do you optimise your team to stay ahead in the window? Use your wild card for one. what if thats already used up? you better think of your team value then and focus on one pick so you arent losing points with over one pick. You want to think aboutto improve your team value by replacing a defender foer a better valueone. how does one do that then? what factors point towards the right pick? say for instance you've identified a defender as the point of difference to push up your team value. Do you just look at player stats and attributes or each of the back line's as a whole? do you take the history of games against both teams also?is it the potential goals the defender can score? or gets conceeded in that he's played in this season? do we consider games the player starts or games that he's come on as a sub? do you measure this defender's potential against a second option in a head to head? I believe we need to think of these factors,creating quetsion points and stages measuring the probabilityof each question stage and comparing it to the previous stage then adding in a sum of all parts result producing a compounded probability.This is the culmulative effect of goig through all the attributes and questioning each stage,which hopefully leads you to a definitive answer.The whole point of this is to give you CONFIDENCE in your picks and stop you worrying when you have made a decision and made your changes, being able to let go once you have officially made the changes.