Which features are important for you?

On this moment we are redesigning our Excel Import tool and we would like to know
which features are most important for you.

Do you want to have the ability to..

import csv files?
easily set up the import files with different organization?
import multiple files in one go?
import multiple worksheets in each file?
interact with the data during the import to correct errors?
merge data with existing records (add and/or replace/append)?
re-import failed records?
pick up info from individual cells?
run imports from VBA code?
process many records with high speed?
your email?
other remarks?