This isn't really part of the thread and I didn't really understand everything you said, but let me clear something out. I have a simple mode fire FM that I use to farm low tier dailies, so I have my share of experience with it. Not much expertise but enough to at least answer some things. So, do you know you can access all FM frost mode skills while using simple mode? In fact, of the classes I have played, I have been able to manually access nearly all skills the regular way with simple mode on. And while several classes do lower dps with it on, I don't know of any case of it interfering in any other aspects of the gameplay, like defense or utility skills being negated or whatever. Simple mode replaces what's on your RMB with a set of skills, which also usually includes what was initially alone in that button. It doesn't touch anything else on your configuration. The only variant case is with FM and it's difference from other classes is a single key.
In the case of FM, since RMB becomes simple mode's skill set, [F] key is modified into a frost switch that remains always available to use until something else occupies the [F] prompt, like a KD recovery or some other special action, then it goes back to being a frost switch. So by pressing F in simple mode, you switch to frost in the same way you do with RMB in normal mode. So a simple mode FM has no excuse to not use any frost skills like bubble and sheath when required. Also, FM's simple mode automatically switches between both modes because it's "rotation" uses the basic fire and ice palm attacks, so you don't even need to press [F] if you release RMB when at frost stance.
Now to bring this into this thread and make it more on track with it, the cool thing about simple mode and skills in general is that (regardless of the one or two wrong descriptions) the devs made it or tried to make it so you don't need to seek outside help to know what it all does. While on the topic of the thread, gem crafting doesn't completely explain what it's full result would be. And this is the difference I'm pointing out.
As for the part about the game teaching you rotations? I'd still say that no to that, at least in my opinion. Learning some things that the game doesn't intentionally teach you is a big part of gaming as a form of entertainment. To make the player involve himself/herself into the game's details by practicing and using either trial and error or seeking help from others who have already passed that part of the game experience has been an old and important part of what gaming is. So the game should just limit itself to tell you what each part does, explain it well, and let players connect the dots by themselves. So in short, not teaching you a correct rotation should be an intended omission, but not telling you the full result of your crafting effort shouldn't be allowed.