I've been following this routine for a couple of weeks now and, so far, it seems to be working. I process my inbox a couple of times a day and then spend the rest of my time in the 'starred' section, clearing out anything that needs some attention. One thing I've noticed about this is that I'm much more likely to reply to an email now, even if it's just a two-word response. I'm usually prone to procrastinating about replying to people, especially if the answer is in the negative. Strange that this email strategy seems to have broken me of this.
Unfortunately, Sparrow seems to be the only desktop Mac mail client to support Gmail keyboard shortcuts. Mail client developers: support Gmail keyboard shortcuts!