Was it the best thing I've ever seen? No... but I certainly didn't regret spending my money on it either. It was some 2 and a half hours or so of escapism, and I enjoyed it on that level.
...required visa applicants to hand over all phone numbers, email addresses, and social media accounts that they have used in the past
Personally, I know I wouldn't even be able to begin to comply with this kind of demand. I don't remember all of the old phone numbers I've had. All social media accounts? Does that include aliases on bulletin board systems from the 1980's? Again, I couldn't comply because I don't remember them all. I probably have about a half dozen expired email accounts at old internet service providers, some of which don't even exist anymore, where I can maybe remember half of them.
The disadvantage of many small pipes is that if they are too small, they may not be useful for some purposes, and if you make them too large, you could end up with lots of wasted space when some cables don't need that much room, and you will generally run out of available conduits to put new cables into sooner than if all of the cables had just been in a single much larger pipe. If you make them different sizes, then you create the risk running out of a pipe size if one size is used too often.
If the ratio of the cross sectional area of the available room in the common pipe to the cross sectional area of the cable you intend to run through it is high enough, damage to the cabling you want to run through or any adjacent wires is actually very unlikely to be a concern. Companies could easily add a more protective layering on their cables that would add to its size no more than a customized conduit would to further protect them... which is still going to be cheaper than digging a hole just to run some new conduit.
Actually, some of those could actually be pretty useful. An option to close tabs unvisited in the past x minutes would be particularly nice to have (where x is a user-configured value).
I suspect, however, that this kind of functionality can be added via plugin extensions to the browser, and may not need to be in the browser code.
Science is what happens when preconception meets verification.