There have been/will be a small number of quick upgrades but I wouldn’t plan on it - plenty of existing talent too. Anyone joining now will be at the bottom of a rapidly growing DoJ list. Pay broadly similar to J2 I’d guess but not knowing all the details quite hard to compare. More FDP probably because trips are longer and fewer.
DHK is now a medium/long haul airline and the days of multiple short night sectors round Europe have gone. 767 is West to USA, East to BAH, BKK, HKG