Dems ran the pre 2016 campaign strategy....to no one's surprise it failed epically.
This is all that needs to be said. This "suburban strategy" will crash and burn, and the GOP will become more invincible to it as the party evolves over the next 30 years. Sorry, but that's just the truth.
GA-06 election results
Romney +23
Handel +3
Clearly the Democrats aren't making any inroads.
You can remain confident that "educated suburbanites" will shed their political views overtime and become Democrats, rather than (almost) rejecting TRUMP's GOP (which, again, they didn't and haven't in a majority). Maybe it'll work out for you. I think it won't.
A moderate republican who isn't trump just got crushed. Trump hasn't created a new trend, he's simply accelerated what's been happening for a long time.