Ok so example: My team spawn traps you on Nuketown you are using tac inserts inside A building I kill you. You spawn on tac drop another one I kill you again, you drop another on I call in my chopper kill you again with the chopper. Now I get kicked because the game thinks I am boosting off of you. Your solution makes no sense.
While your scenario is possible, I'd say if it happens 4 or more times, it becomes extremely suspicious and extremely unlikely that it's not boosting. A legit TS user will smarten up after 2 kills, most after 1.
That said, although I don't like the TS, they shouldn't take it out just because a-holes found a way to abuse it.
What really irritates me is that call of duty on HC allows team mates to kill your equipment like sentry guns, guardians, claymores, trophy systems, but you can't destroy a boosters tac insert if you are on their team?