Good luck MN - I think is a smart move, and I think you will make a great BA - communication, common sense, and a desire to understand and the ability to influence, is what makes a good BA in my book (I started life as a BA) - I don't hold that much weight against some of the specifics you see adverts for BA's requiring - most of those are quickly learned, but if you don't have the other things which are more difficult to 'learn' - no amount of knowing the proper way to 'model' or document something will make up for it. Hope you get something useful out of the other interview feedback too.