WOW has a number of add-ons that are supported, SWG however, has none, there are add-ons, but their not supported, which means whenever a patch occurs, you need to reinstall them, or worse, reinstall the pre-addon configured files before the patch, and then reinstall the 'add-on' though the few that exist, are fairly rudimentary, and are more to do with combat animations - WOW's monopoly of useful UI tools is not present in SWG, if SWG had the playerbase that WOW has, i've no doubt there would be, i think WOW is one of those once only things, no other game has managed to garner such an immense playerbase, which is reputedly 11 million plus, compared to a game that can't even manage to raise 100 thousand players, you can probably see why they have concentrated on WOW. Perhaps if these developers created a few tools for SWG we might see an upsurge in players, not to WOW levels of course, but more is always better.