I'm all in for the early access! However...
I don't think that selling ships for ARX is going to be good for the player base long term. Its got nothing to do with PTW, more of providing a shiny new pilot instant access to mid game content (Stellar T8) without having to scrape their way out of the noob zone, upgrade modules, trade up for bigger ships, etc. (...and all the satisfaction that comes with the process).
Lots of the folks here have been playing this game for a very long time (now where did I put my Medicare card again?). In that regard, ships for arx means very little and helps support the game.
...but for NEW folks, they can easily miss out on the early game process/achievement by simply buying a T8 right on Day 1. If new players don't have to earn their place in the galaxy, it won't be much of an investment. The problem will not be "Pay to Win", it will be more like "Easy come, easy go"...
I hope I'm wrong...