Yes for what it is worth I have god status on a single airline (and thus their alliance). I always put in for an upgrade, however most flights are getting quite full (full because the economy is doing well, so making money, but less seats). For the last year I have flown ~50 times and have been upgraded about 2/3 of the time. I work for a startup so business is out for everyone, CEO on down. We do pay for premium economy which on international is better with more room then economy. Of the 8 flights on this trip I have one confirmed upgrade and waitlisted for the others. My guess is I will maybe receive an upgrade on half. Now that being said I have used miles for family vacations (all in business) more then once so there is that. :)