This is indeed a wonderful tool!
I'm using it to find a route for Global Explorer RTW trip.
In addition to oneworld airlines, it allows flights on all these:
AA AY BA CX EI FJ GF IB JC JL JO KA LA LP MA MX NU QA QF RJ XL 4M
Plus all QF codeshares on 6 different airlines.

The problems I have:
1. QA is not in database of your tool.
2. If I allow codeshares, then ALL codeshares of these airlines pop-up, while I am interested only in QF codeshares, and to limit even more only the QF codeshares on the 6 airlines that are allowed.

I presume that this could be quite popular search patter, so could you help me how to search for these flights? At the moment I use custom pattern with AA AY BA CX EI FJ GF IB JC JL JO KA LA LP MA MX NU QA QF RJ XL 4M.

Thanks!