The problem with the Queen of Cards trick is that she only plays the card once, so if you lose to her or end up modding that card as well, you'll never get another one.

Yeah it does come down to what is easier, personally, I find Chocobo Breeding less of a chore than building Lionheart, and you only need Lionheart like you need Knights of the Round, just to make the fight go faster. As for Laguna Card, I just never mod rare cards, even if I can potentially get another, I just don't see the point and while I feel Omega is a bit more of a challenge largely because of this, I also don't think he's that hard either. The only optional boss that was difficult in the PS1 era was Ozma, and that's largely based on the RNG which sometimes would make him even easier than the Weapons, while other times had the computer give you the middle finger as his Meteor attack always landed and killed your whole team.

To gear this all back to the topic at hand, I must say I'm kind of disappointed so far with what I'm seeing here for the remaster. While the graphic upgrade is nice, the bonus stuff doesn't appeal to me as I happen to like VIII's gameplay. So much like the VII and IX remasters we got on the PS4/Steam, I'm probably going to pass on this one for the moment unless something new arises. I can still play VIII fine on my PSP or PS3. I am happy new fans will get an easier chance to experience it though.