I've been thinking about this some, and I've decided that I would like to be the Strategist. My procrastination of my sideboard games has made me realize that, while I really enjoy deckbuilding, I don't actually like having to play out those decks. I would definitely rather make someone else play through all the boring matches instead of myself, and the fact that there are people that actually feel the opposite way is pretty nice for me.
Positions aren't really about skills or usefulness. The Lieutenant usually isn't the second best player, and the Strategist usually isn't the one managing the vault. And while I'm the self-proclaimed Troll of Team Gravity, I'm not actually trolling members on Team Gravity any more than members on the other teams. Instead, positions are based on how much you actually want to play these games. Since Strategist will get the fewest games, it's a position I welcome with open arms.