I must say that I am very happy with the 2.300 firmware upgrade for the RTB. Apart from some needed fixes, I find several new functions very useful. My favourites: the new Trigger Action function (handy when triggering on infrequent signals like serial bus messages) and now also the new LPF and HPF in the math section.
I want to applaud R&S for that.
Also want to draw some parallels. In the field of photography, Fujifilm was the first to issue a serious series of firmware upgrades for its X100 camera, not only providing fixes and performance improvements but also new functionality. They kept doing so even long after the camera was succeeded by new versions. Friend and foe now agree that this provided the company goodwill, satisfied customers, and importantly, a very loyal customer base. They raised the bar for others.
In the field of (music) synthesizers, there is a (sad) range of examples of companies that brough products to the market too early. Instead of doing proper firmware updates, they then rushed to launch newer versions, leaving their first customers users with unstable instruments and promises never fulfilled. (I will not name them, musicians will know some companies I talk about). No need to say, many musicians will never buy anything from such brands again.