For the price point, I guess Kinsta can afford to offer Verizon ROUTE DNS and Google CDN or StackPath. Since most of the visitors on our website are from North America, I personally prefer CDN service from Google, Akamai, or Verizon Edgecast. Yes, we know service providers like Akamai and Verizon are not cheap for an individual, but Kinsta can make it happen.
KeyCDN is a good solution, but for the last few months, we have noticed significant performance drops on our websites with KeyCDN.
Also, if you like to continue offering KeyCDN, at least allow us to have free CNAME and SSL.
As for DNS Amazon Route 53 is excellent, but services like Verizon, NS1, and DNSMadeEasy might be a better option.
Lastly PHP Workers, this needs to be increased or allow us to buy it as an addon. Review collected by and hosted on G2.com.