Peg'giz |
"not have enough time to come up their character's background" - as long as you don't expect them to write a 4000 word essay about their backstory I don't really see a time problem here. For me it sounds more like a "naaa, don't want to do this, just want to hit things".
Everyone should be able to come up with a short passage about their chars background. It don't even have to be a real story. Some rough points should be enough (like a characters CV).