I don't seem to understand, maybe it's me. Could you please more specific and just name your pickups and your style and what the exact issues are, that you are experiencing? Maybe orhers have the same gear. You could even open a new thread and ask for help, if there is something you are trying to solve. Also, I did not say "follow", I said "in my experience", that's different.
I can say this: traditional pickups and styles work great with the Kemper, for me and everybody I talked to or played with and who uses Kemper. It is not hard to find good sounding profiles of amps I already own and play. It gets even easier when I focus on my skills, musicality and mood, as I already said. I am no modern metal player, so this part is up to those guys. But at the end, there is no need for pain and torture - nobody is forced to use whatever gear if it is not somehow immediately right. Go with what works best for you, your guitars, style, work flow, pickups, feel, etc. If you have made sure, as I said, that your skills, technique, musicality and your mere ability to simply enjoy music (!... big problem with many so called guitarists nowadays!) is not the real issue, then maybe you should just consider different gear?
Ah, I was wondering how long till someone said "well get different pickups then!" 
You know, I have considered this - a standard Les Paul (or possibly SG) would be my choice - I've seen a lot of videos where some of the Kemper profiles I've rejected do sound great on these instruments. Thing is tho, I like my current pickups. I have a few gtrs, but my main recording one is a Patrick Eggle - kind of a British PRS - with DiMarzio MoJoe and PAFJoe pickups - the, MoJoe (bridge) in particular is a bit "thicker" than most stock humbuckers, which is probably where some of my problems with profile-compatibility lie, BUT I have never have a problem dialing in the right settings for them on real amps or modelers - and when the settings are right, they're incredibly articulate/dynamic and "vocal" almost (they are after all Satch signature pickups!). They also work great for both lead and rhythm playing, and for both aggressive and more lyrical styles. So, while I might still get a Les Paul or an SG at some point just to add to the gtr arsenal, I want amplification-gear that works with my Patrick Eggle too!
But here's what it is that I think you're not understanding - I'm not experiencing any "issues" here as such - I know the Kemper inside out in terms of tweaking, I know what a good guitar sound is and what it isn't, and I'm good as far as "skills, technique, musicality and the mere ability to enjoy music" go, thank you very much 
And I think I did already mention that I have found a lot of fantastic profiles that do work perfectly with these pickups. It's just that I've had to sift thru rather an inordinately large amount of profiles to find them... I write and record music for a living, so often need a specific tone for a track, and time is often a consideration. My point was simply that (in the context of this discussion of KPA vs Fractal) I find it easier and quicker to dial in a tone on a modeler than hunt thru large amounts of tones that other people have dialing for their gear - and this is the reason why I, like the OP, am considering a Fractal as an additional tool.
I think what irked me about your posts here was you seem to imply that if someone finds they have to go thru a lot of profiles just to find a few that work with their pickups, then they must be doing something wrong. In contrast, I'm being rather generous with my hypothesis for why people's experience varies in this regard. e.g. I could just say "well, some people have no taste" - but I'm open to the fact that different pickups, and styles, do play a large factor.
Again, to clarify, it's not that I think the majority of profiles are "bad" - in fact almost all I've tried I would deem to be "good" profiles. But put it this way - if you go into a recording studio, and plug into an amp, do you just leave the dials as they are, or adjust them to suit your pickups and the sound you want? I can assure, any producer or engineer would insist on the latter! You'd want to get the best sound out of the amp first, before any additional EQ-ing etc. What I do find with the majority of profiles is they sound like amps where I'd never leave the dials where they were if I plugged into it sounding that way, and that there's only so much you can do with the pre or post EQ to fix that. However, I hear Liquid Profiling has just dropped (or at least the beta), so fingers crossed, all these points may be moot soon!!
And btw, Kemper themselves are freely admitting these limitations I'm mentioning in their press-releases for Liquid Profiling.
Anyway, keep enjoying the Kemper, as shall I, but - unless LP really does change things radically in terms of more realistic tone stacks - then I shall also soon be enjoying an FM3 as well
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