RealBand works just fine on my new systems and old systems.
ASIO is and has never been necessary. When I tried it I got a whole month of grief. It was badly written. Actually very badly written.
As to several small buttons that say guitar, even my 60 yr. old eyes can see I put a fiddle there. Point taken, some people need to get different levels of input, but say i put that fiddle on strings, I know that Westering Home, that I spent several hours getting to work, has a fiddle there. There are only 4 instruments playing.
The LSB spinner, I have 2 good sounding hardware synths and I use them all the time.
I can record fine in both Band in a Box and RealBand. And I can start up Audacity, hit record and run everything back in through the mixer and I have a stereo track of the instruments.
I have a Behringher power mixer with 10 inputs, and a non power one with 5 and a Bose one with 4. 2 Work on stero in, the last on usb. All record fine.
I have lots of VST's I can use, I don't need them much.
At the end of the day, I can see a screen for newbies, a screen for recording, a screen for practice etc. But I'm doing ok as it is.
Now if you want to hear complaints about software...just try and talk to Bill Gates about the problems with his O/S. I'm sure he'll jump into the forum, or reply in person to your email. OTOH, Mr. Gannon sends me messages, replies, and works hard to offer great products, good customer support, and value for your dollar.
And you can get your money back. Try that one on Bill Gates.