Yea, I'm definitely a mid-1400s player as well. I might be able to squeak it out in the 1500s if I had a consistent duo-partner. I play a lot of Ranked with Slouisk, who I think most of you guys met by now. The main problem is, he is an amazing Ranged AD carry, but he always has last pick because he's lower Elo than me. It's hard to convince the team to let him have that position. If he gets it, we split up our skill and I go some other lane while he carries bot. We probably win 80% of our games when that happens, maybe 50% when it doesn't.
In solo queue, my problem is if I get first pick and Kassadin is banned, I don't really have a strong pick to go with because my other mains then have easy counters. If I go WW first pick, I often see a Rammus, Blitz, or Ali that pretty much counter me with their CC. If I go Teemo, I often see a Shaco jungle (impossible to push hard against), and another ranged champ top (Teemo is more of a counter pick to someone like Trynd, Singed, of Cho top). Singed is my other go to #1 pick, but I really can't deal with someone like Wukong as him. Nocturne and Gangplank are my most common picks first because I know I can play solid all the way through the game with them.
I'm thinking of honing my skills with Rammus and Maokai as I go into Season 2, I think both are finally re-entering as viable in the meta. My support is still probably the weakest area. I can play a really solid Taric, but I feel completely useless if the team starts losing. Hopefully Karma gets buffed a bit so I can start playing her in Ranked more. She is the most fun to play as out of all the supports (hell I might just start playing her anyways, I always do well as her).
*Sorry, random ramblings from someone who is stressed out by exams right now haha.
During bans you should see if you can top pick something for someone else and then trade the pick later. Tough in solo queue because they need to own the champ you want to play, but it could help prevent counter-picks. Also, don't worry about playing supports in solo queue. In solo queue your primary concern should be carrying the whole damn team on your shoulders to victory, because the rest of them may suck. Win your lane decidedly and then go gank to help everyone else win their lane too.
*Also I'll second learning jungle Rammus, he's hella fun.