I tend to avoid Lockdown even though I really enjoy it. If everyone is near, it runs well. If there's even one person with 200+ ping (you can tell), the match sucks. Even clockworks runs could use some latency help. To keep this short, I think SK should consider using GGPO to aid in fixing the lag.
inb4 people claiming OOO wants lag since it gives them more money due to res costs. Let's not start that argument, this is just a suggestion on alleviating most lag.
More info:
http://en.wikipedia.org/wiki/GGPO
Site:
http://ggpo.net/
I think having a server closer to you will be both cheaper and better than re-inventing the game to support GGPO game with 16+ players.