Hey once upon a time I was pretty adept at white pass drills.....did a lot of them, got it down. Haven't done them in a long time. I just don't see them as being part of regular skiing other then saying shit happens sometimes and being "able" to start the turn on that inside ski and transfer to the outside later is a valuable skill to have so that when you find yourself there its no big deal. I don't race, perhaps in racing there could be some tactical advantages I'm not aware of, I leave that to you racer guys..
But back in the PSIA days I got pretty adept at doing the 100% untransferred turn entry white pass, with my new outside ski lifted in the air to prove it; and setting it down at the apex. What worked for me at the time was thinking about skiing apex-to-apex, on one ski, then the other ski on the other side apex to apex. The transition was something that happened in the middle completely on one ski basically. I felt this was good practice for balance skill development if nothing else, but also a good one for generally allowing the CoM to crossover and not blocking that. I would use a slight relaxation release on my one footed release, to help that happen, but just finding that state of balance where you aren't falling over and are fully allowing the CoM to move across..that is what I got out of it the most, as a drill.
When talking about "weighted releases" I guess it depends on the audience and where the term is coming from and being asked about, but I view that as more of a practical thing that probably happens in a lot of my turns all over the mountain other then when I'm just skiing groomers. I think some of the advantages I mentioned above can also be learned by drilling it, its just I perceive it as less drastic and pronounced. No ski lifted in the air to prove anything, and if anything it gets away with less refined balance then regular skiing on the outside ski.