This is what comes to mind, when talking about maximizing a trip which will include Maldives:
- IAD-IST-MLE with TK. Best European airline that flies to MLE.
- 2-3 nights in Istanbul. December is not the best time of the year, but a great city to visit.
- 4-6 nights at the Conrad. You can also do 4 nights at Conrad and 4 nights at the Hilton Maldives...
- research the other great HH places in East Asia, and choose 1-2 more places from Singapore, Bali, Koh Samui, Bangkok, Hong-Kong.
- Try a return in F via Bangkok, with outbound F sector with TG. If on the A380 via FRA, even better