Hello,
If we need to manage them via console ports remotly, what I wopuld prefer is have a Data Core Network which is out band, Lets say a 3925 router and from their we can have an extension to console ports of the boxes.
I didn't understand "I have 10 L3 switches in production and do not want to be able to through the uplinks anymore. "
Lets say if you want them to manage remotly via ssh/telnet you need to pass the management traffic out of all the trunk ports and asign the vlan in all the switches, which inturn passes the management traffic to your putty server at one central mpoint so that you can access all the switches from single point.
Please spare with my english If I am not clear.
BR
Mohammad Thanveer