as long as your wife's plan covers "essential health benefits" (which it almost certainly does) then you are fine. if she were to quit you would be uninsured. you would have to pay a penalty or buy insurance on your own. you may qualify for subsidies to buy insurance on the exchanges.
my company health insurance is useless. my wife has insurance through her work (bcbs) which covers us. so i do not need to do anything as far a signing up for anything since i'm covered under her insurance correct? if she was to quit one of us would then be required to sign up right?