My preferred German strategy is to but 1 bomber per round. These can be used to harass Allied shipping although generally they merely force the Allies to have to add many more ships to their Atlantic fleets. They can also be used to strat bomb England but I prefer not to use German bombers for such unless the UK is very short on funds. Their main purpose is to tip the balance against Russia when the big battle finally comes although I have generally used them for trades with Russia until that time.
The only shortcoming I have with this approach is the lack of defense that Germany usually needs against the most commonly run Allied game plan of KGF. If the allies are not putting the screws to Germany via the triple team, then your approach is very strong. Range and Power is always good, especially when supporting units can take the damage (READ inf casualties), adding re-usability to their attributes.
BTW, this bomber heavy approach works well with USA too (again, range and power!)
What could be more effective against KGF than bombers? Allies will typically have 2 or more fleets in the Atlantic, right? So that means the Allies have to spend money on (useless) surface navy in addition to gear, while Germany’s bmbs are getting used every turn.
This circles back to the optimal Allied KGF move.
Carriers loaded with ftrs are probably your best Allied option.
ESPECIALLY against a bomber laden Luftwaffe
I guess it depends on how you want to defend against a KGF move with Germany
1). Keep them from ever landing by sinking the allied navy (your approach mentioned above)
2). Keep them from landing with a strong Atlantic wall (the method I prefer)
or lastly when neither 1 or 2 is viable
3). have such a strong counter as to merely allow a trading of france.
Why do I advocate 2 over 1?
Defense is always cheaper / easier in A&A (and real war too). Also, all axis partners can help in this effort. Italy pumping out inf, Japan flying their unused ftrs to land in France and/or Italy. that way, if the allies do land and take a heavily defended France, the German airforce would not be decimated (Jap ftrs should be sacrificed first).
If Germany alone was counted on to protect herself by building so many bombers to keep the allied navy away, Russia probably would be to bleed them dry.
Of course, we are talk generalities, and games can vary greatly from one to the next.