So as for me, I'm not waiting for any Bakkt, ETF, Government regulations, Institutional Investors, Venture Capitalists, etc....I'm just waiting for 2019 to pass by and we'll see.
From what I understand, the only catalyst is .. year 2020? That could make sense only because of the halving, but I tend to believe there are multiple factors needed for a "pump like crazy" and simply "year 2020" is not a valid factor.
So the halving could be one factor. We may need some more to cause the FOMO, else it'll be "just" normal growth, if any.