Pretty savvy adds, and especially doing them as tag-ons from HKG (at least initially). Maximizes fleet utilization while not dedicating two (or four) airframes to ultra-longhaul routes that still have a lot of low yielding VFR and/or tourist traffic. That said, Thailand especially is increasingly catering to the luxury tourism and ecotourism markets and I could see either one of these adds ultimately being served viably from SFO nonstop.
Nobody is talking about ADL, which is (at least to me) arguably more interesting. It's a really nice city and the heart of Australian wine country. I'll be curious to see whether they're going after business or leisure travel for that one. Outside of wine, I don't know a whole lot about the Adelaide economy, but I can attest that it's a nice, modern city that isn't as pretentious as either Sydney or Melbourne. Has more of a big town/small city feel to it.
Given that Austin and Adelaide are sister cities, it might be a fun recognition to see them give the same flight number to an AUS-SFO leg.
The second daily MNL will also be really great, especially for the insane amounts of nonrevs that are always trying to get on. I'm sure it will always fill up just like the first one.