I have captions defined with automatic numbering, and I would like to
define the spacing after consistently.

Unfortunate (1): one space is not enough space, if I define the "Follow
number with" field in the custom numbering with "space".

Unfortunate (2): if I define "Follow number with" as a tab stop, what
do I define the tab stop as since my style for the caption is centered?

Unfortunate (3): two spaces would be ideal.  I would just have the 2
spaces in the number format box, but I don't want the two spaces to
show up in a cross reference!!

I.e.: ... as shown in Figure 2-1  .

Any suggestions?  Thanks!