and if you indeed can get to EXP, you'll get 8 one-way VIP upgrades. if you can use them, of course it's good; if you can't, I think you can exchange them on coupon connection too, usually each could be worth 20-30k miles (at least as of a couple of years ago, not sure now)...

so you're in effect, for say 67k miles you fly each year, getting 8 x 20-30k + 67k (100% bonus) + 67k (base miles) = 300-380k miles worth of awards...so it could be like a 400-500% mileage bonus...

(but of course to do coupon connection you'll need to have mutual needs of some awards at the same time, it's not like a simple transfer of miles)