As far as "planting" I think you answered your own question.
You said you feel less consistent since you started planting.
That shows its the wrong thing to do, Its throwing off everything.
Just what was wrong with the dexters you got? did you get ones with changable soles? You might try a different brand or even the slide sock.
I think if you get your shoes right first and start sliding again it should help
with your approach and timing problems.