most of these comments I've seen is such generic advice..
I know that there has been some good conversations on this subject in the past, ill try to search when I get some time tonight..
I'd say be who you are.. know your clientele, know your area, everything you do should be with your clientele in mind.. if you can get a particular niche, maybe whiskey bar, maybe its martinis, whateever appeals to your demographic, do it and do it well. dont try to appeal to the masses. The best bar for the demographic maybe not be what you consider a perfect bar either...
I really think the business trend in major cities is having a throughout theme or niche. I guess that's more restaurants than bars though...
Anyways, Youll never be short on opinions. I'm sure everyone thinks they can run a successful bar including me lol
Wish you huge success. and keep us updated