Thank you - these are some excellent suggestions. I have been researching Yogyakarta. Prambanan and Borobudur seem exactly up my alley. I previously visited Siem Reap and loved it there (though I think I was templed out after 3 days). I was thinking, however, I might spend all the time there. I looked up that one can go see sunrise from Mount Merapi (so that's a replacement for Mt Bromo activity). If there's a day trip to some scenic Ubud-like place, I think that would complete everything I want. If I stay put in one place, I could also get a free night using my Marriott credit card.

Downinit - yes, I agree with the bulkhead seats. I've gotten them on Frontier Airlines (US LCC), and it works out cheaply enough.

But I'll definitely check Malaysia as well as Garuda. I'm just disappointed there's no Star Alliance carrier there (Singapore and Thai just don't work for Malaysia/Indonesia price-wise).