First, I'm an extensive user of STAAD Pro, but I also have access to SAP2000 and VisualAnalysis, so when I use STAAD, it's by choice (somewhat, STAAD is our company's analysis software of choice). Yes STAAD Pro (and STAAD X) have problems, but the folks at Bentley are more than willing to listen to your gripes, problems, suggestions.... I would suggest that you contact Carlos, or one of the other Bentley folks, directly with your issues. It's important to log them as service tickets so that Bentley can keep track of everything, but contacting a specific person has worked wonders for me and my co-workers in resolving problems (yes, it may help that we have hundreds of STAAD users, and thousands of total Bentley licenses).
Second, you may think that the grass is way greener on the other side of the fence, but It's not that much better when you actually get to the other side. I find myself using STAAD for some types of models, and SAP for other types of models. I'm totally free to use whichever I want. STAAD definately has some plusses and (a lot of) minuses, but so does SAP. I'd encourage you to have an actual dialogue with the STAAD developers and provide your specific insights and desires rather than just throwing up your hands and giving up. It may feel nice to do so, but doesn't solve any problems. I'd rather work with Bentley to make STAAD X the best structural analysis program around than to just give up on them.
I personally think it's refreshing that Bentley is willing to more or less start from the ground up and develop a new version of STAAD. I also think it's great that some of the RAM employees are around now to provide direction as well (I'd think you'd all agree that the RAM products are much more useable that STAAD). Those folks are helping to make the future version of STAAD more useable as well.
I'd also like to thank Carlos for taking the time and applying the courage necessary to put himself out there and contact the users directly (Josh Plum, I think it's great you do that too). It's not easy hearing the product that you work daily to improve be denegrated.
What I would encourage Bentley to do is to provide more transparency on the future of STAAD X because it seems pretty opaque at this point, and that galls a lot of people.