We booked our own RTW last Summer.

SEA-FRA-ZRH (on LH) - stop
ZRH-CPH-SVG (mix of LX and SK) - stop
SVG-CPH-PVG-NRT (mix of SK, and NH) - stop
NRT-YVR (on AC) - stop

I used combination on KVS tool and UA web search to find space and book. The taxes and fees are higher due to LH and SK, came out at about $900 per pax. We spent 105K MR points per ticket. I attempted to price out the itinerary on ITA, and it came out I think around $18K each? We had option to book via ORD, or YYZ, with lower overall YQ (LOT or TK), but then we would spend $ buying positioning tickets and hotel stay the night before departure so decided to bite the bullet with LH, and it's convenient since we're SEA-based. The YVR to SEA ticket is on cheap AS 1-way.

Among the 3 different business long haul that we flew (AC, LH, and SK), the most comfortable IMO is ....... drum roll ..... LH. Yes, it's weird, the most basic J seat, no privacy and what not. But we both slept the longest, and service is quite nice. SK has very nice looking cabin, but foot well is very constricting for sleeping, and the FA is so clumsy. One of them dropped a b'fast sausage on my lap while serving ..... AC cabin is very nice too, but I kept hitting the tray table with my knees while trying to sleep.

We are planning another one next year, with stops in Norway, Denmark, and Japan.