I am currently in the PhD program at SATS. I am doing a contextual dissertation and was wanting some input from the board.
I have been researching and thinking on some of the "hot topics" in the church today.
It's curious that your advisor, in a PhD program, would encourage this kind of approach. Granted, I'm for deep research in weighty theological topics for a dissertation.
Perhaps he is attempting to use a current issues topic to pivot into some significant research. As a pastor in a church (and one with a PhD) there are indeed a host of these topics out there.
Some of have been pointed out here and they are good to go with. I'd toss out some more research oriented topics that might give you a broader platform for future work. Stuff like: evaluating the influence of deconstructionist literary theory on contemporary readings of Scripture; racial composition of multi-cultural churches and how they approach ministry; speech-act theory in evangelical arguments for inerrancy; political movements and church-state relationships; etc.