One for IK themselves, really.
Been using AT for about 10 years, since v3. One of my favourite features/secret tricks was the ability to use a different poweramp section...
For example, a much used favourite trick of mine was to take an AC30 sim and emuate an AC15 by switching the output section and cab, another trick was getting a superb 60s Merseybeat era bass sound using the AC30, different output valve config and cab.
Sadly, it seems this isn't possible in AT5. Any plans to reinstate the feature or do I have to hang on to AT3/4?