I am currently working on adding User Defined fields to IN-A and IN-B. total of 100 characters so you could add 100, 1 character fields, or 10, 10 character fields or any combination you want the choice will be yours.
 
If you add any user defined fields it will add a new Tab to the IN-A and IN-B screens called User Defined.
 
and yes we/you can add those fields to Reports too.
 
 

Don't know how difficult it will be, but it would be great to be able to bring in the data for these new fields using a CSV file and DE-B.  

This is OT from my first post, but while you're at it, how about a sortable field for quotes and sales orders that could be used to classify (by type, for example).  We have a few different types of SO's- parts, repair, system sales, warranty and would like to generate reports filtered that way.  A one character field would be sufficient.