UK Bonus- Awesome. Creates a little cat and mouse game in the Atlantic between German subs and the UK destroyers. Sure, Germany can try to “hide” a sub somewhere but with naval bases now that’s not going to be easy. Any rule that soothes the tendency for giant naval arms races in favor of small skirmishes a good rule IMO.
USSR Bonus- Pretty good, a lot like the American one in Pacific. It will make the game end faster once the writing is on the wall, +1 tank per German territory.
German Bonus- Almost as good as the UK bonus. A little bit of decision making on the part of Germany thrown in, the Russian loot pinata will have to outweigh the bonus to justify Barbarossa.