What I’m proposing is about .001% of the work and headaches that an offline mode would take/create.
If you play seasonal the SSF character will see everything the Non SSF character sees regarding your stash. The only difference is you can’t move or pickup any seasonal item with your SSF character and vice versa. These items will be shaded darker so you’ll know which are for SSF and not.
So each of these pairs would share the same stash.
NA_Season
NA_Season_SSF
NA_NonSeason
NA_NonSeason_SSF
NA_Season_HC
NA_Season_HC_SSF
NA_NonSeason_HC
NA_NonSeason_HC_SSF
EU_Season
EU_Season_SSF
EU_NonSeason
EU_NonSeason_SSF
EU_Season_HC
EU_Season_HC_SSF
EU_NonSeason_HC
EU_NonSeason_HC_SSF
AS_Season
AS_Season_SSF
AS_NonSeason
AS_NonSeason_SSF
AS_Season_HC
AS_Season_HC_SSF
AS_NonSeason_HC
AS_NonSeason_HC_SSF