It's interesting the changes they made to escalation, though it's nice that it's now an official event. I wonder, they say all ships and upgrades must be used when coming from one round to the next... does that mean I can change pilots? (as in R1 I have a rookie, R2 I have Luke?)
No, otherwise the rules would mention it. What you're asking about has never been a part of the Escalation format.
But you used to be able to drop pilots and ships as long as you retained a threshold of the same points. Now you cannot drop a ship. ever. So that means that you're adding 30 points from R1 to R2... Which means for rebels adding 1 ship with LOTS of upgrades. For the Imps, they currently have "a bit" more flexibility, but not much... 30pts is 2.5 ties... so if they add 1... all they have left is 18 points for an alpha... or they could add one expensive ship... Note that this also means that you'll never be able to have a named Falcon unless you severely gimp yourself beforehand... or start with it in R1.
Now, if you were allowed to promote pilots within the same ship... you could start with something like... Red w/ R2D2 + Dagger w/ FCS + HLC. Then on Round 2, you can promote the Red into Luke (4pts) and then add Garven. Or... you could add an ORS, and then in R3 promote him to Han.