How an Axis Sweden would change Baltic operations

How would the war change if Sweden joined the Axis in the Second World War?

Germany would gain Baltic air support, material support, and easier movement toward Finland, creating a larger problem for the Soviet Union and Allies.

Sweden would likely supply weapons and materials while allowing much better land-based air support for German naval operations. It would also ease movement and support toward Finland. Full cooperation is a large political premise because it makes Sweden an active Axis partner rather than a transit state.