I think the survey needs an additional box:
-pick your guitar carefully when shopping.
When you play a guitar and the intonation is wrong, just don't buy it. When the guitar sounds great, buy it. And you'll never spend one second ever again wondering about bridges.
I recommend this approach, when it comes to the nut. If the nut has to be replaced or heavily reworked, just keep looking. Same thing with the pickups.
Some of us just play the guitar, as we find it in a shop. I once did this, but I haven't done this in the last 15 years except on a few occasions (a Fender Custom Shop No-Caster, for one). But most guitars, are shipped with Nines, or sometimes Tens and I tend not to play Nines at all - and normally not so much Tens. Once you change string gauge, IMO you're off to the races. Once you assemble your own guitars, you see a simple and clear path to upgrading "guitar kits" and sometimes that's all the guitar in the store is: A passel of decent quality parts, from which a really nice musical instrument can be refined.