I have a 3600 series that is very poorly configured, I inherited someone else's mess.
IP's are all routed as /32's (and there are many), BGP is not setup correctly, router is taking up to 2 hours to arp changes and a single attack with anything over a 10 meg packet is killing the network.
No vlans , its basically just one big lump of sh** , someone routed every IP as a /32 , saw that they were ping-able and went home.
For this project, you will need to look at the router config make recommendations and provide pricing to correct as many of the issues as possible. Documentation in this phase is critical as I'm planning on cramming it down someone else's throat :)
Happy bidding.
--Sage