1) The fare rules allow 20 sectors. However there is no way to include more than 17 free sectors in a xONE3. You can of course buy up to 3 extra sectors, subject to the rules on purchased sectors.

2) AFAIK some (perhaps not all) flights between HKG, NRT, SIN and BKK have longhaul a/c. There may be other routes as well.

3) Perhaps look at the europe destinations served by both CX & BA/AY/IB/RJ

4) BMed flights are only for a short period. When is your travel?

5) You can have the normal allowance of flights within continent of origin, but can only have 2 stopovers.

6) LAN operates MAD-FRA.

7) Only the nonstops count as trans-continental.