I don't change my characters out because I found a terrific strategy for all encounters. I would feel like a fool to not go with it. Maybe there are better strategies for certain situations or maybe a better overall one but since nothing is challenging, I am not encouraged to try and figure out a new one.

I will tell you this, that one boss fight I mentioned above did force me to alter my party and it was exciting to try new combinations until I found one that worked. It would be great to have to tweak my party every other dungeon to find the team that works best for that area. But if this was Halo and everything was a wide open field, I am not dropping that sniper rifle to try something new...just to change it up. That is not who I am. By changing it up from a wide open field to narrow corridors, I switch up my weapons to find the next best option. I debate what weapon to take with me not knowing what the next area will bring. That is exciting!