If you think military HOTAS is user friendly, well yes it is after you have used it for a few years and have made all of the mistakes and have developed techniques from messing things up to keep yourself from finger porking everything away. At least that has been my experience in the strike eagle. It making sense?
After enough time it makes sense cause thats the only way you know how to make it work.
Also I can get into details of HAT (Height above target) sources and hierarchies like what Deacon is talking about above as well. Its a pretty big part of our training and something that most sims do not touch on.
The Viggen was quite fun because it was the first one that required you to actively think about your HAT source (altimeter setting) if you want to do any of the fun bombing types for your mission. At least if you wanted to do it accurately.
Looking forward to utilizing all of those fun systems in the Harrier/Hornet whenever they are released.