Having taken my pet out with me to actual T3 areas and trying to get an actual feel for it, I have come to the conclusion that I have chosen poorly for 2/3 of my knights on my account. I mostly blame myself for feeling overwhelmed by all the new information I had to take in and rushed for trying to keep up with everything that was happening, both in-game and in real life.

It eventually made me think "I'm probably not the only one feeling this way either..."

So that's what made me think of this.
A Premium Item that can be bought with Energy, or and Event that will allow Knights still trying to get used to the new Battle Spirits to switch out for a different one. Ideally having to start all over with the new pet to prevent this item from being abused, or allowing their levels to transfer to the new pet if it's done as part of a temporary event.

However I suspect this may or may not cause some technical issues, I thought it should at least be suggested by someone.
Opinions are welcomed, and maybe with enough voice, a GM may hear out pleas.
Thank you all who listened.