All such flow-like programs exist for one reason: To keep the feeders manned. They do NOT exist to expedite your progress to a legacy

In this climate they have some utility for those with significant blackmarks, who might face uncertainty in getting an eventual call.

For those with a decent record, in this climate, your best bet is OTS.

If I was starting out today (knowing what I know now) I might do some kind of flow for the legacy I *least* wanted to work for... try for OTS with my top picks, but still have a plan C just in case. Statistically, OTS will be faster for most.