I'm just going to leave this here: Thunderlord's Brand made me instantly leave your link.
One thought from my quick glance: You play a ton of different champions in every role when you don't get support thresh. I would narrow those picks down to one or two per "other" role. If you're going to be forced to play a non main role make sure the pick is a comfort or semi comfort pick.
Also while mains are great to have, I would recommend adding another to your role. Thresh is great, but not in every comp and situation. Somethings you need a heavy peel champ like Janna, or a boosting/damage support like karma. Having a few choices will go along way in champion select.