Sandbox Mode??

hey:) so me and my friends love the game, infact we are in a massive guild with everyone who is so nice and supportive. so i was thinking how about a sandbox mode? you can pick your character, star level, gear level and pick who you fight against.. it can give a rough idea who to go for & im sure more players would love this idea! you can make the option to get paid for too. i'm sure people will buy it unless you would like to do it free!

people reading this, sounds like a good idea?