Fill catagory for team formation needs alteration

Ok, I do like how people get to pick a Primary and 2ndary category to fill. Here's the thing, I'm a life bronze (gotta love solo quene). Frankly ill do just about anything, BUT I don't like one lane. you need to expand the system so you can have 3 and 4th pick, or add a sub category to Fill so people can exclude. I mean ill take the system as it now is it is better, its just annoying when I trust my luck that I won't hit that 1 out of 5 shot and I get unlucky and stuck with a lane I don't like.