Interesting thing, the idea of tougher medicals. If you perceive (the FAA does not) that the present system is failing, you could be wishing for something (tougher medicals) that would bring down all sorts of unexpected problems on the pilot group.
ALPA, by the way, has always fought the idea of tougher medicals because they see the danger. They also note there is no need, so why cause damage to fix something not broken?
Dr. Tilton, head of the FAA's medical team, tells an interesting story about the effort to install super fly-boy medicals back in the service. They grabbed all these pilots and began running them, taking blood, etc. And..."voila!" First one was grounded, then two, then three. It got so bad that the squadron could no longer function. Why? Because the super-tests highlighted too many things that were anomalies, not problems. One by one (and in relatively short order) they made their way back to the flight line.
Dr. Tilton has been (and is) very firm on the lack of need for advanced testing. Why, then, would anyone on this forum (or elsewhere) advocate something different? There are no statistics to support such a move.
As for the driving force behind the idea, at least on this forum, it's to get the so-called old guys out of the cockpits. Well, that ain't gonna happen. If increased testing comes to airline pilots you can bet it will be across-the-board, with everyone falling into the program.
IF pilots were such a wreck that this were needed, it would be one thing. But they are not.
As a reminder, the FAA was tasked by Congress, as part of law changing the age rule, to follow the pilots over 60 and report to Congress on any medical issues. Four years into the change there have been no red flags raised.
As Dr. Tilton said, which has been reaffirmed over the past four years, there is no NEED for change. I'd suggest you let that sleeping dog lie.