I will say with the economy being low priority and krono not existing, it really is a "jump in when you think it's right" type of game. There's no urge to start at the same time as everyone else as there's no real competition or resource hoarding like traditional EQ TLP starts. I mean maybe they'll have early events or titles (almost 100% they will), but as long as they don't give out some sort of BIS utility toy or something during these you can absolutely just wait until it looks ripe.
That said, that's bad for business. If there's no reason for people to start early you could really start with a lower population than you want and not give off the healthy game vibes you're looking to project. It does happen with 95% of games where they blow up on launch with 500k players then they hit a steady 10k for the rest of their life, even successful ones and everyone just goes "WHAT HAPPENED??!?!" when reality you're almost always going to lose the vast majority of players after new release hype. But if you don't have the new release hype are you just going to be birthed into a lower population, but steady population? That with the sub fee I don't know. They're really going to have to hype up the initial launch with FOMO shit or a lot of people will wait for this to cook while DPG probably says "No, that's not enough money" and cans it before it can.