What is the relevance of continually bringing up the shortened three point line? If the three point was shortened in today's game, then you would see the top three-point shooting teams today easily make over 1000 threes. Long distance shooting has improved in the today's NBA, I think that has been established. Even PFs have range now, and I have mentioned this in a previous post. What is lacking (and it is very much a relevant point here) is efficient low-post scoring. If you have a player like Shaq on your team that is going to give you 30 points a game at near 60% shooting, the need to shoot as many threes becomes greatly reduced.
I have given you an example already of a championship Spurs team that was bottom in the league in three pointers made, but won due to their elite post play and stellar team defense.
As for your second point, I'm pretty sure SVG built the very team you're describing around D12. Howard had nothing but shooters around him; Lewis, Turkoglu, Redikk, Nelson, Pietrus, Lee
. They got to an NBA Finals, but all those threes couldn't help them when they were faced with the superior post play of the Lakers. Are you spotting the trend yet?