Fans vote with their pocketbooks. They will get the league they are most willing to pay for. It's really the only way fans have any input. The millions of casual fans will out vote the hard core traditionalists every time.
So DH? Lined players pockets. 162 game season? Lined pockets. AL and NL merger? Lined pockets. Interleague play? Lined pockets? Night games? Lined pockets. Speeding up games is better for television, lining pockets.
I'm the opposite. If it doesn't line pockets, in others words if the fans won't buy it, then I'm suspicious.