Even though I have only flown 5 RTW's in the last 20 years, the complaints about the AA RTW are misplaced. Sure there can be an occasional bad agent, but the pluses far outweigh the neagtives.

1-A dedicated desk that is open 12-14 hours every day, not some general ticket sales desk.
2-Changes are usually done within 24 hours, many times sooner.
3-The only cost is the $125 fee for change in ticketed points. Plus any extra taxes and fees that a change may incur which you would pay anyway. I received a refund of those same taxes and fees when those fees decreased. Show me any other discounted fare that has those provisions.
4-AA does not charge a local service fee that JL and QF do charge.
5-A and D class are much more open than other discount fare inventory. Most issues seem to be point of sale/commencement or married segment restrictions. A TA may have better results, but not the 1 time that I used a TA instead of AA.