No, this is currently not possible. The field needs to be somewhere in the view in order for it to be used in the tooltip. You might consider adding this to the Ideas section!
Thanks for the response Tracy. That is very depressing to hear. I might discontinue using tableau because of this issue... just kidding.
In my opinion the kb article that you linked to should be depreciated as it is no longer an ideal way to perform a top n filter.
To address your situation, have you tried placing those additional fields as Attribute pills? this will make then aggregation pills and not have an effect on the table calculation addressing/partitioning as they would if they are dimension pills.
Wow, the infamous Joe Mako responded to my posts (2!!!) awesome!
Hello Joe, all the stuff you write is extremely helpful and i see you or references to you in 80% of the articles i've read. Aside from the custom SLQ stuff.. no idea what thats about but will learn.
And your tip on changing the pills to attributes worked perfectly!!! wow!