Some of us just enjoy the game not being super turbo hard all the time.
How would your game become significantly harder if the loot from an Embassy was worth 5 million instead of 15? More like a Supply Ship or low-end base than a Battleship or lucking out on Power Sources in a base?
...this is an outright bug.
This is related to improper tile recovery amounts.
Debatable. It's vanilla working as vanilla does, and UFO Navigation never had recovery dividers in the first place.
I would call it a balance issue caused by making cool-looking maps, because that's what it is. Whether the mod maker wants to address it is up to him.
Personally, I'd tone it down. I mean, you get something like at most 10 navigation from even the biggest vanilla-ish UFO, 20-25 from a base that has them set as recoverable, and 45-50 from a Hybrid Embassy. And that's not all, you get more swag than from even one of the giant 'colony' bases. More Power Sources, more Elerium, more miscellaneous bits like Examination Rooms or Entertainment. Alloys are the only thing that you
don't get in massive quantities.
As an aside, the new UFOs like the Troop Ship or the Arbiter also have greatly increased UFO Navigation yields. And even vanilla UFOs can have quite dissimilar amounts. 10 from a Harvester, 8 from a Terror Ship, 4 from a Battleship, 22 from another Battleship... Well, at least this UFO lottery is kinda thematic, interesting and doesn't
triple recovery values.