No, that's ridiculous. WoW was a success for as long as it was because of the artstyle (stylized lasts longer than polys), ease of mechanics (quests, menus, moving, etc.), the lore, music, content, etc. The only reason it's falling off is because people are just bored with it. Once you've leveled your 3rd healer, 2nd tank and fourth hunter, going through the same areas, doing the same dungeons, getting the same gear, it gets boring. Star Wars does many things right - stylized graphics again.. for longevity, smooth interface, solid lore, etc. WoW players actually imo, will like this MORE than most others. It will seem most familiar to them. But still be completely different. New ways to tank, heal, dps. New dungeons, new talent trees, new loot, etc. It will be just fine.