I admire your optimism, but there are few and far between that can look at this industry through rose colored glasses. Right now things look good, full seats, big order book, hiring, ect. That can all change in a blink.

Don't come to any company planning on an upgrade "time". you'll likely be disappointed. If you see guys today upgrading in 2-3years, and you're hired today, odds are there will not be a 2-3 year upgrade for you.

I'd also expect guys in the churn on bottom to settle once there's a contract in place. who knows... but looking down the road 5 years every class you're not on a seniority list could cost you months or years in the right seat.