I have checked the videos and I like the proposed new interface of Risa3D v18. Unfortunately, after being a Risa3D user since the days of the DOS versions (my first purchase was, I think, the v4.0), I was forced out as a Risatech costumer by the subscription system. It is extremely expensive for me: I live and work outside the US and earning and spending such amount of dollars just to keep the software active is out of my budget, particularly since I acquired 3 different products from Risa: 3D, Foundation and Connection, and for a similar amount of money in licensing I can have, from another firm, a suite that includes tools for drawing, BIM and a capable structural engineering software, among other applications. It was paradoxical for me that after receiving the final confirmation that if wanted a software upgrade from Risa I would have to be considered as a every other new customer, a few weeks later I got a mail from Risa support informing me that a bug I had reported had been fixed, encouraging me to check it in the (then) new v17 version.
Meanwhile, I will continue using the Risa products I have until my toggle key allows it. I already have some problems starting directly the Connection and Foundations programs; I have to access them via the Risa3D integration. For the future I am trying other possibilities like Robot (many features but much of them somehow difficult to find), Nemetschek's own Scia (too many buttons), Midas, Etc. By the way, the standard software used here in my country is Etabs (or Sap2000). Maybe I will have to join that trend…