Remember that BIAB/RB includes a DAW as a convenience. The meat of the thing, and the intention, was to create those backing tracks. If the DAW side is causing you grief, I'd say move to a DAW and then export your tracks to the DAW rather than pull your hair out. And you will get a suggestion for every DAW out there based on what people know best. Think of it as people who refuse to drive anything but a <insert carmaker here> because that's what they always had and will remain faithful to until they die. Many will only use what they can get free. I have Sonar, Reaper, Pro Tools, and a few more I don't even remember the names of. I got them just to take a look at them, and still I use the DAW in Real Band. It does everything I want from a DAW. Paid $600 for Pro Tools and NEVER use it.

I find Sonar WAY too hard to get the initial setup done. Assigning interfaces, learning the screen layout.... I have tried like 5 times but never got anywhere with it, so it now sits unused on my hard drive. Fortunately it comes with a decent array of plugins that Real Band can use.