So we now use GT titles for everything, one lacking feature I've found is the ability to control a GT title
via api/shortcut.

We managed to advance through pages using NextItem and PreviousItem, however it would be super cool if a
control existed to specify a page (ie TitlePage&value=1&input=x).

I noted the api does spit out the page number thats active for the title.

Will GT receive further improvements in the near future like this?

My only other one on the wishlist is a data value condition for animation (ie, if textbox value is null = hide, or if textbox value = 1 = show),
which I can appreciate would take some time to knock together.

This would put GT titles on the same footing as the XAML ones in terms of data sourced titles.