I don't think I'd spend the extra 60K miles and $100 for a connecting business flight on the outbound flight unless you won't have another chance to see ZRH.
If there were a nonstop in Business that's one thing, but for a stopover to spend that much extra? Eh...
I take it the extra $100 and 60k are for both tkts together
so the real question is ,is it worth it to them to spend $100 and the extra 60k for a full day in ZRH, I dont think theres a clear answer to that. It would cost me 40k off season to ZRH . I was going to Belgium for 1 day just to go to Bruges, then extended it to 3 days with a day in Ghent and 1 in Brussels, and its Coach on an AA 757 :-( , and thats simply to walk around Bruges. True the 1 thing I have on my side is the time to do these trips. So if both Mr & Mrs Mikeoracle are working full time and dont know when they will get another chance to see ZRH its a very cheap price to pay
ZRH is IMO a place where that is about the most time 1 needs to take it all in. I know numerous people who have done it this way and thats the only time they were ever in ZRH and were happy they spent the day there, as you will see very shortly yourself
For sure if I was going to be connecting in Europe anyway Id go with it as is. If either $$ or Miles are in short supply that would be a factor, but ZRH is truely a very nice place to spend a day with the canal boat ride,the boat on the lake plus some free entrance to some museums and all transport included in the Day Card.
again a personal thing that doesnt have a Right or Wrong answer to it