Yeah, definitely look into it if you're interested. I did $10 at first because it seemed cool and $10 was not a big deal to me to try it out.
The big thing that made me feel more comfortable was them saying there looking into releasing their own exchange. If they do, they will be making commission on trades, which makes it more sustainable than just trading on Poloniex.
The $10 minimum is gold. I know Bitconnect probably doesn't want to deal with small loan amounts, but the foot-in-the-door technique is amazingly powerful.