It's not about Pro-FSS v Pro-ADS, it's about choice. But you already know this.
If your only argument against having both is 'development time' then it would seem sensible for those of us who want choices to continue asking FDev to allocate resources to implement them. Perhaps you'll be lucky and they'll come at the expense of a change that would ruin the game for you.
Edit:
Maybe we can get the ADS back instead of yet more 'Press {key} to activate' messages littering the UI?
It's not my only argument against it, and you know that. We've had this discussion like what, 9? 10 times? As for choices... the problem with giving people choices is that sometimes they make the wrong ones. Sometimes they can't make one at all.
Let me offer this:
Back when, Microsoft designed and released what remains their Crowning Glory of Operating Systems - Windows 2000 Professional. They will not release a better Operating System between now and the day Microsoft is forgotten. If I had the choice, I'd still be running it.
XP was garbage, and looked like it was a joint venture between Microsoft and Fisher-Price, and could have been called "My First Operating System".
Vista was so bad even Microsoft killed it early.
Windows 7 was better than XP, but too hand-holdy, too designed to enable people who shouldn't touch computers to pretend to use computers.
Windows 10 is upgraded version of 7, with even more hand-holding, and built-in advertising.
None of these are half as good as Windows 2000 was.
But... enter another bit of software, one that, at the time, was the source of about half to 2/3 of my annual income: AutoDesk's 3d Studio Max.
Well, it so happened that, at a point in time, their current version simply would not install in Windows 2000, leaving me no choice. My choice was taken away - I had to upgrade (downgrade? degrade?) my operating system, or give up modeling, animating and post-processing, and find another venture from which to derive income.
And add to that that Microsoft stopped updating Windows 2000, meaning any issues found would not be fixed, any exploits or security issues would not be patched.
Two companies took my choices and made them for me.
I lived.
I assure you, you too will live without a choice of imaginary space scanners.
And if this isn't enough, I will rehash one of my other reasons to oppose:
We do not know what else Frontier has planned for future additions or enhancements. They may well have a plan, slated to begin development in 2022 that will take an entire year to complete, that may necessitate changes to the scanning systems that will give you back the functionality you want so badly, but not because you've wanted it, or badgered the Community about it, who can do NOTHING about Frontier's decisions, and who grow so wearing of hearing the same rhetoric again and again that they start to oppose you out of spite, but because it fits their designs, plans, and intentions for their game.
Yet you resist every effort to encourage simple patience with every fiber of your being, because, dear Veruca, you simply want it now.
And when you don't get your way, we get 120 pages of bickering over opinions.