The main problem about A8 is not the engine itself, but the tools that look like they were developed 10 years ago. I love the engine, its a joy to code with it - but hell, everything about it just screams OUTDATED. WED is propably the shittiest map editor ever; GED is just a lame excuse. Looking at tools like Unity, its not hard to see why those other engines have a better reputation - they just look and feel better, no matter what coding power they got. Oh, and they are able to export to iPhone and co, so a huge plus for indie developers.