What aspects of style help the suit to aid the lifter? I'm guessing a wide squat would get the most benefit?
Well, I squat with about a shoulder width stance, but different things work for different people, with stance width it's best to find a suit that will roughly suit the stance you already have (eg. regular stance or wide stance suits). I find my technique is different when I squat suited to when I squat raw, unfortunately it's hard to describe what I do as I've just change little things over a period of time, without really thinking about what I did, I just got better as I practiced.
Many people try to "bounce" or drop into the hole to try and get extra bounce out of their wraps, although this doesn't work for me, I can't stay tight enough, other people have said they get more out of equipment when they squat slow. So really all I can say is practice.
I find when I get in the suit and wraps, problems I have raw, like my knees coming in, are fine, but instead I have other problems, generally with stability. Main thing I can suggest is sit BACK into the suit and keep your chest up.
If any of this doesn't really make sense or I'm rambling it's because I'm about to go to sleep and I'm pretty tired, maybe I'll read over this later lol