I have a suggestion not for means but for someone in the community. If you all care so much about not being able to find teams in tl3, tl4, etc simply band together and form a system. We all know 1/2 the population doesnt use lft, its simply hey guys lets do this, that, etc.
My resolution is this: 1 generous city owner from each side create an org named TL5(3,4,5,6) OMNI(clan) and recruit everyone into it.
Imagine seeing 30+ people online at any given time in your level range and side in the same bot....if you cant grab a team in that situation you need to work on your social skills. If it is universaly adopted you will have a better chance at teaming and meeting new people all the way from ely through 220.
I really dont see a downside to this system if the owner still uses his/her city to farm still while helping everyone out.