I literally just got Guinevere myself from a very lucky coin pull and when she gets maxed I have no doubts she’s getting all my current Wizard emblems.
But my roster isn’t even close to yours. I am cheap to play. While I still think Guin is still a top 5 tank (3rd best IMO behind only Ursena and Telluria), you clearly have one of the better options in that spot.
So it makes total sense to reset her and give those emblems to someone you use more on offense.