As one who plays LHE as well as O8 (and one who has read Miller's SSHE several times), I agree with your thought process on the value of raising preflop when you have an equity advantage.
I've heard so many players say over the years, You shouldn't raise preflop in Omaha; it's idiotic. Then they'll call for "no low" on the flop and mock the raiser when he ends up not winning. But the goal of poker is not to win pots; it's to win money. And you do that by betting more when you're an equity favorite.
When I first started playing the game, I found Steve Badger's articles on Omaha very helpful. One of them is a list of myths he debunks, including "Don't Raise Before the Flop":
http://www.stevebadger.com/poker/omaha/myths/.
Buzz, a deceased former moderator of this subforum, was a strong proponent of
not raising preflop. At the risk of oversimplifying his argument: He paid a lot of attention to how his opponents reacted to his betting actions. He found that he often couldn't get them to fold with a prefop raise, but he could get them to fold with a bet or a raise on the flop if the pot was still relatively small.
In other words, he emphasized manipulating his opponents, whereas Miller and Badger emphasize manipulating the pot size.
My own experience validates Miller's and Badger's viewpoint: Math wins in the long run. I know that my own propensity to raise preflop—and my willingness to play big pots in general—is a big factor in my ongoing success at this game.
However, there is value in considering both perspectives. For years I made the mistake of reraising preflop with bad Aces in an attempt to isolate against the raiser. But this isn't NLHE, so that never really worked. I would simply end up playing bad Aces in a bloated pot multiway. Buzz's rationale for not raising preflop finally got me to stop doing that.
What specific hands do I like to raise with? Something like A24K double-suited that has counterfeit protection for low as well as some high-hand features. In other words, an A2 with at least two or three of the following attributes:
• Another Ace
• Another wheel card, the lower the better
• A Broadway card, the higher the better
• A suited Ace
• A second suited Ace or a suited Broadway card