The building descriptions and flavor text (also that for techs and resources) is also on my list...If folks wish to help out writing those, I certainly won't say no! Particularly with the functional bits, those don't take me-specifically to do.
Can we get the format you want them listed in?
Things like Width, formatting codes (color for races for example, etc), active field added to the buildings.xlsx file, ice cream?
If you want to edit them and test them in-game in realtime to make sure that they fit in the right-hand column (that's the big thing), then you can go into RuntimeData/Language/en/a_bionic.xml
If you search for "MapTileLayerType_" you will see that there is a lot of stuff like "MapTileLayerType_Lander1_Name". That controls the name of the lander. If you add a line under that called "MapTileLayerType_Lander1_Desc", then it will gain a description. See "MapTileLayerType_ShoppingMall_Desc" for an example of one done properly.
Please note: whitespace formatting does matter, and if you get odd tabs and stuff in there (like visual studio wants to add by default), it will look super funky.
As descriptions are created, posting them... somewhere... would be useful. On the wiki perhaps is easiest, just in a temp topic that I can yank from and put into the xml as I go. Do remember that anything you put in this xml file will be lost when the game updates! So make sure and have a backup, or pull the stuff out.
Ah, the "in realtime" testing bit: when you are in the game, after you have edited the xml and hit save, hit Ctrl+F5 (or Ctrl+F4, I use these daily but can never keep them straight in my mind -- my fingers remember but my brain does not) and it will immediately update what you see on the screen. Useful for making everything fit without having to restart the program a million times.
The main color tags I use:
[#ffe178] - what this tech or building is for
[#ff91f9] - alternate recommendations
[#ffffff]