They’re a Tier Zero crew with no significant assets, authority, or connections. They’re very, very far away from the endgame. If I had to guess… maybe 50 sessions away? Could be more. (For comparison, my other group on YouTube, The Bloodletters, are Tier II after 13 sessions, and they are very good at crew development.)
There’s no “leveling too fast” in Blades. The range of power is very compressed, unlike some other RPGs. People are people in Blades. A “top level” character and a beginning PC aren’t as far apart as, say, a level 1 and level 20 D&D character are. Both characters can be killed by a knife to the spine, or get taken out of play by too much Trauma. You never reach a point where you’re a 100 HP juggernaut.