Like everyone else in love with the Grand, I have studied the stats and regs trying to think of ways to improve my odds of getting a permit or an invite, but there's only so much you can do. As someone already pointed out, the best way to do it is to round up 15 newbies, all with 5 points each, and carpet bomb five chosen dates. Not a trip I'd like to be on, but heh!
Personally, I like the idea of increasing the number of launches in the off season because if you think your odds of winning a permit are bad now, watch what happens as the Baby Boomers retire en mass. This is only the beginning!
The Boomers are the 500 pound pig in the python. As their age cohort passes certain milestones in life everything gets blown out of proportion from the housing market to the job market to recreational opportunities. I was talking to a raft guide with 30 years in the business who said that her business was now booming again... with Boomers, not younger people.
The Boomers are a health conscious, nature-loving generation and many of them are itching to hit retirement at full speed. They have money, and now they have time... time to spend in the wilderness after years slogging away at work. They know that their health is a fleeting thing and that if they're ever going to do this "trip of a lifetime", they'd better get on it. Many of them will go on commercial trips, but a significant chunk will want to DIY the GC. Mark my words, your chances of winning a permit are going to get much, much worse over the next 10-15 years.
Look, I'm not bashing Boomers here and I'm not trying to be a Debbie Downer, either. At age 51, I am at the rump end of this generation (born between 1946 and 1964) and I know how this will play out because I've been dealing with it all of my life. Boomers are JUST STARTING to hit retirement in numbers and it WILL have a significant impact on your recreational opportunities. Like it or not, this is reality.