You know it's funny you mention this because the entire reason the NBA implemented the 3P line (and other rule changes) was because the NBA was devolving into a super boring slugfest among super physical athletes. I know today's basketball is so uniform that it gets boring to watch a lot of it but there was nothing worse than the mid-90s basketball when teams figured out that there aren't enough human beings in the world to score consistently on a packed-in defense that loads up to stop scorers.Players would have to learn to score in a greater variety of ways rather than the boring cookie-cutter play of today. One thing I really hate about the corner 3 is the exciting plays we used to see in transition where the greatest athletes in the world attacked the rim. Now we see the player ahead of the pack sprint to the corner. The wide open corner three is the ultimate goal of NBA offenses and it is boring as hell.
But as you rightfully point out (and many others), many NBA games seem like they turn into a jump shooting contest.
I'm not sure what the answer is as 3P shots - and particularly the corner 3P - are way too valable. Moving the above-the-break 3P back will work for a little bit but it won't take long for shooters to catch up.
It would be great if the NBA tried to experiment with these rule changes in GLeague preseason or mid-summer tournament or what not. For example, I would be super interested in seeing what BBall looked like without a corner 3P. But that's not going to happen anytime soon.