You might want to look at some of those routings again I see a number that are still valid. Most of the long segments common to those routings still exist and the routings can be fine tuned or adjusted as needed to fit your own circumstances. The big change made in the last year or two with regard to routings was the general limitation on how many times you can fly the same segment.
See this thread for some routings from KRT one of the cheaper places to start:
http://www.flyertalk.com/forum/onewo...ne3-4-5-a.html

As for best places to start based on price this has been discussed recently in several threads. See for example:
http://www.flyertalk.com/forum/onewo...fic-fares.html
http://www.flyertalk.com/forum/searc...rchid=10462843
There is a spreadsheet that was created by a member that listed fares but since Oneworld removed fares from its website it is no longer able to update:
http://www.flyertalk.com/forum/onewo...readsheet.html