If you are in VMC it's the existing system we have proven over 50 years plus the important safety feature of a zero extra cost NAS type Unicom that at a minimum confirms your radio is on the correct frequency and working correctly to increase the chance of alerted see and avoid working.
Say what??
The "existing proven" (1950s) system had BOTH aircraft on freq talking to one another so that the didn't hit each other. That is NOT what your famed Class E is all about. To plagiarise, "The Launy pilot wasn't as "top gun" as he believed he was...." The lowest common denominator now has total control over the outcome of a conflict with an 100+ pax jet. In your words, "rediculous".
I said a few days ago: there was a third-party at Launy: it was the tower! But the VFR decided not to use it.
On to the unicoms: you demolished a quite satisfactory third-party radio system at our busy airports on the premise that we'd all jump at the chance of follow-me girls giving us amateur ATC. Fail.
You if want Class E, where's your cost-benefit analysis (don't forget to include the cost of transponders for VFR). Do we have traffic lights at every intersection? Do we all drive around at 50kph on the freeway because someone exceeded their capabilities and pranged, killing others? Aviation is not a risk-free activity. On the one hand you're quite happy to allow a bugsmasher to wiz past a 737 unannounced but on the other, demand full ATC to the ground all over the country just because a GPS system went haywire and caused a single-aircraft accident. It's irrational.