It’s pretty much useless speculation to ask when AA will have a great Award Search tool, because the answer may well be “never”. AA is running in a very old system with layers over layers of enhancements and improvements. AA had an agreement with H-P to develop s new PSS (to be called Jetstream), but that ended with bankruptcy and Doug Parker’s choice to migrate everything to Sabre, the existing AA PSS.
In the meantime, the Wikipost in this thread documents a lot of information related to searching for AAdvantage awards.
HELP DESK: MileSAAver / SAAver award questions, assistance