Of course it is, J. SDRUno gets a lot of opinions for and against, and the SDRPlay people take all comments on board. Be aware though that this board is not an official SDRPlay forum – it is run independently and the team only visit occasionally.
SDRUno has a steep learning curve because it has so many adjustable and customisable features. Because there is so much of it, some of the bells & whistles are not directly selectable and have to be accessed via menus. The underlying reason for this (I think) is that SDRUno started life as ‘Studio One’, written by an independent enthusiast as a general SDR interface. SDRPlay bought it from him and slowly adapted and optimised it for the RSP range of receivers.
It is still a work in progress. Whether there will be any major changes in the future I don’t know.
If you have any bug reports or suggestions for features or improvements, you can go to the main page of the website and contact them via the provided route.