Currently, you can take a look at some new Defi projects with a market cap around $2M~3M, we can see the new trend of this year with DeFi, like LINK and KNC. So I think we will have the chance with these small-cap coins. I recommend Jarvis, they're very active since 2018, and its price raised 20x times recently.
Yeah, if anyone looking for small coins but has a great chance to take a shot in 2020, look for DeFi coin. But I expected there will bad and lazy coins with a brand DeFi to get people's attention and have nothing else. Op mentioned Sia which I rank mixed at best.
Well, Sia reminded me of 2017 a lot. I went through the SC chart and saw that it was quiet for a long time, but it was unclear if their team was still active. SC, I think, is about data storage, not DeFi.