Okay it's just a suggestion to add this to the trainer, but a function in which we would be able to face the deck we choose, and also with the optional triple mark/double decksize for choosing specific Fake Gods that we desperately need to tweak a FG killer on. It's to help when you want to try and tweak a deck so that it is well capable of dealing with most situations. Like facing speedy rushes with a stall deck, you want to be able to adapt the deck for a chance against those. It's just that testing against the AI pool isn't always a good measure when making a PvP deck, and with newer AI developments, it will likely be an effective function.
PS: is there a suggestion section, or is General Discussion it?