Im almost 100% positive that Happs Comps were standard issue in the non 3d versions of MK. (Thats what I had in the MKs in the Arcade I used to manage)
As such, I personally feel its "Cheating" to use anything else.
One thing about MK, is that if you accidentally jump, most especially due to an accidental Diagonal... your gonna be in a world of hurt. Thats why a little bit of throw is a good thing.. to keep that from happening. What you may need to do... is build up your Quick-Twitch muscle fibers... using speed-drilling practices. Such a thing takes probably a month or two of time to develop... of daily sessions. Im stating this from various other sources.. mainly in my former martial arts days, as well as... hand speed in sorting silverware, at my first job as a dishwasher at a crazy busy Inn.
Other than that... I feel that most early Classic games are better suited to real Wico 8 way balltop Leaf-Switch joysticks. I feel any modern take on these... is not even close to the same feel, reaction, comfort, performance, accuracy, and fatigue levels. Similarly, I prefer Leafswitch buttons over Microswitch buttons for classics. Micros for fighters, Leafs for classics. Exactly as they were designed... and for very important reasons.