As a lawyer (UK based if you're thinking of expansion!), I think it's a great idea. I've been mulling over something similar for in-house teams but based on precedent clauses rather than entire documents.
I would love to see a site that let you piece together a contract by choosing certain clauses to get the contract you want. Even in a simple subcontractor agreement you have to make decisions like a) what kind of non-compete do you want? b) who owns the copyright to the work, etc.
This is a great idea too. One of the UK providers does a good job of this using technology they call FastDraft. Plugs in to Companies House to get company data for the parties to the agreement; allows you to specify how you want non-competes to work etc. For individuals or small companies it is cost-prohibitive though. A small legal team (3 or 4 people) can pay around £10k a year.
Generally, I think the legal market is ripe for disruption and can be demystified through applications like Docracy.
As a lawyer (UK based if you're thinking of expansion!), I think it's a great idea. I've been mulling over something similar for in-house teams but based on precedent clauses rather than entire documents.