That's not a solution, as everything comes with a price. Reduce cast time means reduced potency, means more complaints and nothing changes.
Want a real solution to this and many other problems regarding playstyles? Educate your fellow gamers, be polite and friendly. If they spaz or act poorly that's on them. Don't just start complaining about stuff and say delete this delete that. It's a social focus MMO, and back in SB days people used to actually teach people things and do things effectively. Now everybody uses Band-Aid solutions and spreads misinformation then complains when the average player underperforms. It's on all of us to make it better, not for us to riot on the forums about something so bloody trivial