Figma Slides cuts out essential features like vertical text centering in tables or access to variable libraries

Hi Figma. Really trying to give Slides a go, as I’d rather use anything over powerpoint, but I keep running into features stripped from the Figma Design that remaking it impossible to continue. 

For one, I cannot understand why I can’t access the variable library. My slides were imported from a file that had a deprecated library, with colors and modes that are totally unused by the assets I imported. There simply does not seem to be a way to remove those… at all. They’re permanently stuck in this presentation unless I want to start from scratch. 

Currently I’m making a table but I’m unable to vertically center text within a cell. This is a hard requirement for making tables that look good that use the type styles I'm defining elsewhere… otherwise I have to manually set the line height to match the table cell height which is nuts. 

I also created a symbol that consisted of a text box and rectangle to act as an off-center highlighting. I was unable, fully unable to tie the text in that symbol to a text property. That is simply absent from the interface, and I had to go back to my original presentation and paste the symbol, at which point I then copied it back to Figma Slides, then it worked. 

This is a super clunky experience and I expect better.