more often than not, your issue with lack of flavor would be that you didn't steep your grain long enough...especially with a BB kit. Some of them that I've done don't call for a steep at all...just bring to temp and remove.
The other possibility is that if you are a recovering BMC drinker...it's going to take a while to get the thought out of your head that beer should taste like bitter pizzle and fizz.
Get going on your next batch, and steep the grains a bit...say...20 minutes at 155 degrees.
Welcome to the insanity.