That’s a great idea for people who just wanna a go into the dark driving an AspX
TBH, I wouldn't recommend just snagging one Guardian blueprint fragment.
To get all the mat's/data you need to unlock
one item, you're probably going to need to explode a
lot of Sentinels, shoot a lot of panels and scan a lot of obelisks.
That being the case, you're probably going to end-up collecting a lot of Guardian junk and you'll probably end-up with most of the stuff you need to unlock 2, 3 or 4 items - so you might as well grab a handful of blueprint fragments as well.
I'd suggest thinking of it a bit like a kickstarter project; you have your basic objective
and "stretch goals".
You might want the FSD Booster but then take a look at what other Guardian stuff you like the look of.
Personally, I'd recommend the Shield Boosters, the PPs and the PDists.
Make a list of all the mat's needed to unlock all those things, head out there and get what you need to unlock the FSD Booster then see how far toward unlocking the other stuff that gets you.
If it gets you most of the way, you might decide to keep farming mat's/data until you've got it all.
Alternatively, if it looks like it's still going to take ages to collect everything, you might decide to quit once you've got enough stuff for, say, the FSD Booster and the Shield Boosters.