If Crystal Tower is supposedly the 'missing link' in progression to the Coil wouldn't it have made more sense to include Crystal Tower on launch instead of the Coil?

Instead everyone will have grinded out Amdapor, likely obtaining full or close to full Darklight (With some AF2 likely) and potentially even their relic weapons by the time Crystal Tower releases and it will be DoA in terms of usage - only benefiting those that came after it was released. This is of course unless Crystal Tower provides a better in-slot than Darklight gear - but seeing as the Coil's pieces are mainly stat preference allocation changes when compared to the AF2 it might be the same for Darklight/Crystal Tower drops.