I thought the FSS only worked in SC or do you mean at speed which would be bad as you can’t see where you are going while in FSS.
That's not all that big a deal - it's not like your chances of hitting something are particularly high, since you'll need to clear the primary star anyway to get a good view of half the system.
Anyway, that just adds choices: do you stop to FSS, getting a much more stable platform for zooming in and making sure you won't run into a planet you hadn't scanned yet - but at the cost of being a sitting duck for interdictions and taking longer if you were planning to map planets as well, or were scanning for signals on the way to a station. Or you could fit supercruise assist and guarantee you won't hit anything.
Ok the extreme is Hutton orbital which if I remember was a mistake by fdev which was taken onboard by players to be a rite of passage ?
Only a mistake in the sense of "the Empire's capital is Achenar" is a mistake - worked fine in FE2, some unintended consequences when transferred literally into ED but it was certainly a deliberate action.
Alpha-Beta-Proxima Centauri in FE2/FFE had the only station in the system be around Proxima Centauri.
In FE2 the maximum possible system radius was around 1000 AU, so that's how far Proxima was - about 500,000 Ls, so
large but not unusually so for an ED proc-gen system - and with FE2's ships that would take about a month - or with 10000x time acceleration about four minutes, less if you had a fast ship and flew it manually for most of the duration. While it took a while, it wasn't that long in real time ... though the
in-game time used would likely fail most of your missions!
In Elite Dangerous, the radius of the Alpha-Beta-Proxima system was increased to the realistic 0.12 LY value as part of the general "make the galaxy more realistic" changes from FE2.
Shortly before the release of Elite Dangerous, the DDF convinced Frontier to abandon their plan for in-system jumps (which would probably have made the exact star separation largely irrelevant) and replace it with supercruise [1] (where it becomes very relevant whether it's 4,000 Ls, 400,000 Ls, or 4,000,000 Ls). Not the only case - nav beacons, USS, piracy - where that late change in a fundamental mechanic left a lot of the rest of the game a bit disconnected.
So all the individual steps - going back to 1992! - are reasonable, but the combination of them has some issues.
(The adopted mistake you might be thinking of is Mitterand Hollow - another object carried over from FE2, but with the orbital period accidentally entered in minutes rather than days in ED - clearly ridiculous when you see it, but fun enough that they never bothered to fix it)
[1] Strictly the original announcement by Frontier was that they were going to have both supercruise and in-system jumps be available; I'd guess that they ran out of time to implement two separate travel mechanisms before release and always had something more urgent to do after that since supercruise
mostly works well enough in
most systems.