One of the more interesting ideas I've run into is skill "floor", and skill "ceiling".
A skill floor is the most basic level of competence someone needs to have with a given unit to get use out of it.
A skill ceiling is a point at which no extra skill with a unit will get more utility out of that unit.
Fat Han is a great list because it has a tremendous width between its floor and ceiling. It really _is_ an easy list for noobs. But it is also a list that in the hands of a skilled player can do terrible things against all commers.
The Phantom changes just lifted the skill floor of that unit. It will still be an unholy terror in the habds of a good player, but it will require a good player to make use of the Phantom.
Autothrusters lowered the skill floor of Interceptors by making them a bit more survivable against turrets, and raised the skill ceiling of them by giving a range 3 bonus against everything else.
A lot of the arguments I'm seeing on the forums would benefit from thinking about the ceiling and floor ideas.