From what I've seen the tiling really isn't that bad or noticeable anymore (although what it implies is, namely that a planetary explorer can only set out fairly safe in the knowledge that what they will find over the horizon is more of the same).SERIOUS SUGGESTION
If this tiling is as rare as people claim (different people claim different things, so I have no idea what the truth is), could Frontier offer to manually change specific planet "seeds" for those very few broken planets? I honestly don't know how difficult this would be, but in theory it might be very easy. In other words, if tiled planets are just a bad roll of the dice, players could report those specific planets and ask Frontier to roll the dice again for that specific planet. It might be as easy as Dav writing a little script where he enters the system name and planet number and script generates a new seed for that planet, thus instantly fixing the planet. This way Frontier can fix the galaxy without rebooting the galaxy, one planet at a time (perhaps using the issue tracker and voting system to focus on the most popular tiled planets first).
I know, it's probably a dumb idea, but sometimes you gotta throw ideas at the wall and see what sticks. It seems to me, at first glance, to be way easier to "reroll" a specific planet using the same terrain generation tech but different seed number (like throwing away a bad D&D character when the dice aren't in your favor) than to redesign the algorithms. Just a thought.![]()
It's really not the "tiling" mentioned in the OP that saddens me so much. It's more the phrase ...
"[changing the planetary tech] would inevitably take time away from developing and improving other elements such as performance, bug fixes, and new content. We cannot justify this level of change and a re-generation of the galaxy in Elite."
.. and especially the sign off ..
"This is unlikely to change in the future"
On the other hand maybe I'm reading too much into that and they really did just mean tiling specifically so perhaps we may still one day get improvements to the tech that generates mountains like this.

(and yes, I apologise for using that example after promising I wouldn't when someone fooled me with real world mountains that look just like it ... it's still ugly tho right?)