We currently have both! We have people using the site in Vancouver and Victoria right now and both licensed movers and guys with trucks are bidding on gigs. We're working on adding a badge system and reviews so users can quickly see how they're dealing with before accepting a bid.
Edit: right now we're focusing on local moves within cities but there's we have no problem with the site being used for long-haul moves.
For the time being we're thinking of ourselves as just a platform for drivers to meet users and don't plan directly hiring drivers. Kind of like a moving dating website. We would like to eventually verify the drivers insurance/licensing and award them badges on the site so users know who they're hiring, though!
Thats right you would be the 3PL and you would be dealing with 1PL(consignee) and 2PL(carrier). So likely dealing with 3PL regulation. You probably already have to worry about licensing, and insurance.
This isn't a bad market to get into. You should educate yourself though more in it.
Edit: right now we're focusing on local moves within cities but there's we have no problem with the site being used for long-haul moves.