Grand Total For Tabular report

[nirajtambat]

Hello
Need some help on below issue.
Tabular Report -
Please advise how do we have Grand Total for tabular report in both ways column wise and row wise.
how can we have sign for numbers in tabular report . like for prices column we want to show $ sign.
Pivot table -
whenever we rename the metrics pivot tables gives error. e.g. sum(qty) we can not give label for this metics. please advise. also sorting is not working on piovt table.
World Map -
World map does not work for city names. and we can have more than one metircs there.
Other issue -
how to show text messages on dashboard, I want to show some information around 20/30 lines as information we don't see header or markup is useful here. please advise.
how to show Hierarchical or Tree structure data in superset. don't see any viz like this.

Please advise.