TSL Patcher is an older tool made to install mods into both Knights of the Old Republic and The Sith Lords. There are mods, even here on Nexus, that include TSL Patcher. This program is integral to patching certain files to help modify KotOR and TSL. They modify .2da files. Which, otherwise would just be rewritten. And including this, not just for those mods, but most mods both here and elsewhere, and handling them, would make it easier to use Vortex with these games. And neaten up the over ride folder.
As far as dazip is concerned, those are handled, somewhat, by Dragon Age Origins, and the built in dazip mod manager. However, I would think that Vortex would benefit from having it included for us who also play that game.
Both of these extensions would increase the functionality of Vortex with these games.