You obviously haven't paid attention to a single word I said. I said that I agree a tunnel IS NEEDED. I said I feel the money would be BETTER SPENT on a tunnel to downtown, but that this project is still EXTREMELY IMPORTANT.
The part that I said was useless is the LOOP. Perhaps you're confused. The LOOP will be running trains from the Port Jervis, Main, Bergen, and Pascack Valley Lines through Secaucus Transfer, around a HUGE circle, and through Secaucus Transfer a second time. The main purpose of this station is to allow people from the lines mentioned above the ability to reach Penn Station by New Jersey Transit. The ability to use it to reach Newark, the airport, and other areas south is just an added benefit.
I'd rather see those lines mentioned above sent to downtown. AT THE SAME TIME, I'd like to see another Hudson River tunnel to Penn Station built, that way NJT isn't delayed anymore and, maybe, JUST maybe, Amtrak can run a few more trains or Metro North can come in from the Hudson line.
So, in the end, I say build the new lower level and tunnel to Penn Station. DON'T build the loop. In the future, build a line for the Bergen/Main/PVL/Port Jervis lines, as well as any other line, to send trains downtown