cinqIt looks like #tf2mix is dead. PUGs on IRC have been on a decline since the introduction of TF2 lobby. While TF2 lobby died, the alternative that came after it was even stronger.
I am still willing to give a shot to a modified version of #tf2mix, but it won't really happen on IRC. That medium is too hard for the users to use while too restrictive to scale properly. Thanks to everybody who played on #tf2.pug.na and #tf2mix, it was a good run while it lasted.
To be honest, TF2Pickup could expand to here. The rulesets are different, although that could be worked around.