Try to think of this as a tactical question. There's no need to rehearse principles of natural rights or the U.S. Constitution. Imagine you're the U.S. President, or in a position to advance legislation to exchange one existing restriction for another. What's your "breakeven?"
I feel that NFA regulations and restrictions are as much an infringement on RKBA as magazine capacity restrictions. But I practice tactical reloads, so to me a 20-round mag limit is less of a burden than the hassles (and impossibility in many states) of buying NFA items. If you disagree then pick some other current restriction -- perhaps it's import restrictions, state-level concealed or permitted carry, "gun-free" zones -- you feel is comparable and let us know what it is and what you'd trade to eliminate it?