I agree that racking is suboptimal in the case where the fermenter has a valve for dumping yeast and hops.
I've been split batching this summer into glass carboys with no bottom valve, and did a side by side to test hop character in batches that were transferred off of yeast into secondary...
I find that dropping out as much yeast as possible before dry hopping and then dropping out as much hop material as possible (about 2 days after dry hop) will significantly reduce the hop burn/harshness. If you use a vessel without a valve on the bottom, that would entail transferring to...
Pitching a blend of dry yeast, by weight, is very simple from a commercial brewery perspective. There is a lot more work involved with successfully harvesting, storing, cleaning, and (re)pitching liquid yeast for multiple generations. One other benefit of dry yeast is that it is much less...