!tbcxpos exists (and is described in the xymacro manual), but !tbcypos is NOT described in manual.   Even in the executables (xyview and compose) tbcxpos can be seen in a long list of other !variables, but no tbcypos.

You are going to have to list the variables that you want (and I'm assuming they are pretty much all tabular). In your example, you say that "!txcxpos" is there, but "!tbxypos" is not. However, the value representing the "!tbcxpos" is not in the status window, so I cant tell what you want.

But Mark if this idea gets implemented what will you ask in the coming Wish List sessions?

Me too - one of my (many) Wish List Session requests. 

I htink you might have mentioned this before Mark!!! But I agree as well!