Ok we are in deep water here.
First of all: hyperinflation was certainly bad, but:
1. It was actually started by Germans to get out of reparations very quick
2. Civilian life adjusted to the situation (prices in shops changed daily, people got daily wage).
It was not perfect, but far from armageddon - please bear in mind that many countries (Poland included) had their own hyperinflation problems after first world war.
Now regarding Hitler being genius/idiot discussion - here is my opinion:
Hitler and Mussolini were kind of "New breed" of politicians. They liked to gamble, threaten their neighbors and didn't like to keep their promises.
Before first world war they would have been eaten alive (one could even see strong similarities with Hitler and how Kaiser Wilhelm acted - Kaiser was sidelined BEFORE first world war as he just could not STFU). But first world war was such a traumatic experience for everyone involved that French and British politicians wanted to avoid repeating it at almost any cost. M&A just exploited that "weakness" to get stuff
Hence Mussolini got carte blanche to settle the score with Ethiopia
And Hitler got Anshluss + Sudetenland.
Hitler could have been stopped during the demilitarization of Rhineland - Wehrmacht was explicitly ordered to withdraw if there would be ANY threat from France. There were no threats - I am not blaming French here, it's not like German soldier had great flags with "STOP us and we will go back" messages.
First attempt for Anshluss was stopped by Mussolini! And rather easily.
Munich was absolute end of the line. Last boon for Hitler, yet soon after he took whole country and bullied Lithuania to give back Memel.
And German people were not really crazy to go into war AGAIN. They just got used to political "bloodless" successes of Hitler, then went ecstatic during first years of the war when Wehrmacht was successful. But in September 1939 mood was rather bad.
Now imagine that Hitler/Manstein never try Ardennes. Instead they fight good old honest war, IE RAM their forces into French & British in Belgium. Allies had proper air force, Germans must cross the rivers, and defeat Belgian fortresses. And German paper tanks must fight Matildas and Smouas (I kinda forgot the name of French heavy tank), and there is no space to maneuver (look at Polish border before the war, then look at Belgium). Meatgrinder.
In the same time blockade is back. Germany can get stuff from USSR, but only as long as USSR deems that necessary.
How long would be Hitler in power?
As for whole "Swap":
1. Poland was offered only part of Slovakia - Carpathian Ruthenia. And since that land was worthless it was a handout, ostensibly without any strings attached. Beck declined and advised for that strip of land to be awarded to Hungary.
2. In my opinion Poland COULD have been persuaded to allow Germans to annex Danzing (provided Gdynia and corridor would be left alone), and extraterritorial highway (basically just a road) was Polish idea anyway.
But
1. That must have happen AFTER Munich, and BEFORE whole Czechoslovakia annexation
2. No strings attached - IE no need to go to war with USSR. It's not like Poles loved USSR, but for Poland there were no reason to attack that enormous country. Poland got already as much lands as it wanted from USSR in 1921 (check out peace in Riga, Russians wanted to give Poland more land, and Poles argued that they should got less

). And Ukrainian "minority" on these lands was ehm.... "troublesome".
3. Poland would have to be compensated. There were German lands with significant Polish minority (Mazuria, German Upper Silesia) - something could have been found there.
Was this swap necessary to any party involved? NO! Germany essentially gets city without purpose (although with large population - 388 K - Wikipedia), and priviledge to build road. WOW!
Maybe Goebbels would be able to spin it as a success. Realistically what was needed was:
1. To tell Germans in Danzing to behave and don't bite the hand which brings them business.
2. Some kind of economical agreement for easy transit of people (transfer of goods between West Pomerania and East Prussia was negligible, and even smaller on land).
BOOM!! EU in 1939