On HCA: Honestly, I'd prefer the NBA did the MLB's way of determining who gets HCA in the Finals. Either their current criteria or the old one.
Old one: Alternate between each conference each year, no coin flip, just take turns (fair, though you can get unlucky).
New one: Whichever conference wins the all star game gets HCA in the Finals. Also fair since only players from playoff teams tend to get selected anyway. They all want to win (some more than others of course, so they can get played more). Would also make that game a lot more exciting and interesting.
On conference record disparity: I agree with this 100%. It wouldn't be a big deal EXCEPT that they determine who gets HCA in the Finals by record. That's why record is an extremely ty way to determine HCA. It's well-known that the east has been terrible, just like back in the day the west was terrible while the east had most of the elite teams.
I don't think we need more cross-conference play if they change the determining factor for Finals HCA to alternating format or all star game winner. I think we're just going to have to suck this one up because they won't let the west play the east that many times and vice versa. There's always going to be padded records and inflated stats for teams that player in whichever happens to be the weaker conference.
The west is really going to soften up in a few years once Dirk, Kobe, Timmy, and the other old greats retire. It's going to be Durant, Griffin, Curry.

Not exactly defensive gurus out there. West is gonna be like the east soon. Run and gun dunkfests wrapped around a boring game full of ty iso ball and chucking.
On reducing games in the season: No. Not only will it not be, it shouldn't be. It basically renders all seasonal records obsolete, and makes total career stats leaders become unreachable. Really bad idea, sorry to say OP. Will never happen.