That said, I find the LOGIC of it, when applied to the real world, very silly. You choose three characters as your main party. All well and good. (And out of 14 PCs, there are only two I don't like to play with, so that's also pretty nifty). However, when one member of the party falls, you have the option of cycling in a reserve member not from your original party. The amount of reserves you get depends on the mission. Again, all well and good. Right up until I start thinking about that from a RL perspective. I mean, basically this means that the reserve members are just chilling out, watching their classmates fight up to 8 monsters/people*, and not bothering to do anything. Drinking tea or something. I just have this mental image of one pushing themself up with a put-upon groan. "Well, FINE!" :D
*8 being the max that I've seen. This doesn't include respawning fights.