I would definitely use Arky in a 100M league in a lefty-friendly ballpark. Arky's is one of my favorite cards.
He will lose a few games to injuries, but he's also a lefty SS with a decent glove who will hit for power and average and draw lots of walks.
I don't really want to promote him and make him harder to draft, but let's give the fella his due.
IMHO, the "15 game injury risk" can be overblown. 15 game injuries CAN happen, but they don't happen all that often. Very frequently, as Steve F suggests, a guy like Arky will play 150 games, have 650 PA, and be a major contributor to the team. A 130 game season is possible, but in practice comparatively rare.