It's obvious that SwitchOS is a low priority for Mikrotik. Even SwOS lite for the couple of switches it uses keeps getting updates, but full SwitchOS seems to be getting ignored.
As far as moving to RouterOS, I personally find that for pure switch functions, SwitchOS is FAR easier to use. I also have about a half dozen Mikrotik switches here at the house that are all SwitchOS only (one of those stuck on SwOS 1.16). Not spending the better part of a grand to replace perfectly good switches in order to use an OS that is far more difficult to use (for switch functions).