As far as WW1 goes, the benefit of Scapa Flow (and the distant blockade strategy that Britain used in the North Sea) was that it provided a well-protected base far enough from the continent to allow for adequate warning for the Grand Fleet to sortie, while being close enough for the Royal Navy to have reasonable reaction time should the High Seas Fleet try to break the blockade. Scapa Flow's distance to the continent also had the benefit of making it considerably more difficult for the High Seas Fleet to reach the base at all - while the cruisers and capital ships had the kind of range to operate out that far, smaller support vessels would have a harder time, as would the Zeppelins that the Kaiserliche Marine relied on so heavily for fleet reconnaissance.

Not sure what you mean by " bring it all the way down"

Anyway, the aim of the Royal Navy in both wars was to bottle up the German fleet. The aim of the German fleet was to escape to the high seas and wreak havoc without being desytroyed.So only the Royal Navy wanted a battle.

The obvious escape route for the Germans was northwest through the Norwegian Sea. Scapa Flow covers that route.

The only way out to the South is through the channel. Easy to shadow and report on in auch confined quarters and extremely dangerous in WWII given airpower.

Should the German Fleet head south, they could've been intercepted by the British home fleet by sailing down the east or west coast of the UK from Scapa Flow guided by shadowing forces.

Jutland seems like an exception, but was an accidental encounter battle where the Germans would have preferred to quietly sail back to port intact rather than face a major battle ( and did).