I had a rflkt & returned it, too slow & unpredictable. I've had a Bolt for about a month now & zero problems.
On first glance I thought this was just an updated RFLKt, but according to DC Rainmaker it's more than that. Sounds like the delay & connectivity issues may be resolved. https://www.dcrainmaker.com/2017/08/wahoo-elemnt-mini-in-depth-review.html
I agree though that I'm confused as to who the market for this is. Sounds like a solid unit but not sure who would need it.