This is by far the most important required feature for splynx to be at par with enterprise OSS/BSS applications on the market. Support for native active high availability.
I once pointed them in my post Required Native Active-Active Freeradius and MySQL Deployment support for Splynx where I suggested they take a look at severalnines - Deploying an Active-Active FreeRadius Cluster with MySQL NDB or Galera to build such a robost system.
I hope this year they do consider such an architecture.