Yes, we left Blesta over the Summer and we left for many reasons but this one is the biggest:
https://www.blesta.com/forums/index.php?/topic/7197-domain-manager-we-need-your-feedback-on-domains/&tab=comments#comment-45629
Honestly, Paul's lack of any response to this just tells me that nothing is being done and we can't run our business with the answer 'we hope to have something available by the end of 2018'. We're there now and there's still no sign of this.
I don't want to create a list that makes it look like we're bad mouthing the software or anything but there are many other features we need and we discovered others after making the switch. I believed in Blesta and wanted to stick with it but it ultimately comes down to useability for our clients and Blesta isn't quite there yet for our business. We'll keep an eye on the progress and if it gets where we need it to be, we'll move back.
There are a lot of things to appreciate with Blesta too and depending on your company and needs, it's a great piece of software. I am in no way saying WHMCS is superior or anything like that. It just has the hosting features that we need for our clients. I feel we gave Blesta a fair shot by sticking with it for over 3 years.