The OP has been frequenting the forum for approx
4 years...duhhh! I've been playing for 4 months now & I already knew everything you covered after about a month in the game - I'd hazard a guess that the OP did too.
He is patently looking for a more nuanced perspective on the FSD, which has been provided with varying degrees of literacy by Elpapo & Aashenfox (the two extremes of the scale - no offence, Aashen

)
I run a 4D with G5 increased range on my DBS which has a range of 17ly or so (I only have 3 ships: DBX & T7 complete the line-up) for the purposes of jumping to a designated IF system around my chosen theatre of operations (where I also store a 4A with G5 LR) thanks to the tedious & turgid C&P system. The difference between the two is negligible on my ship's other stats & Frontier really missed a trick with the A-E classifications in terms of gameplay trade-offs - but this, I have discovered in my 150 hrs, is Frontier's MO across all aspects of Elite! I'm nearly done I think & unlike most players threatening to quit here, I'm a man of my word - it was fun getting up to speed on the initial learning curve, hence I have absolutely no animosity regarding the game - will you all miss me?