Im old fashioned, my two bob.
No requirement of course, but 2500 hours would be pretty skinny for a Twotter command in PNG, if no previous combat aviation in a piston twin first.
Tinpis... I can see your point BUT the opportunities to fly single pilot twin pistons in PNG are getting less and less by the year... there is only one commercial operator at the moment who has bongos or similiar (North Coast Aviation); Airlink was another one (bongos and 404s) but they went under two years ago... so I guess the 2nd best option is RHS to LHS in an Otter...