Both I and @Vanthawould love them. However, at the moment there's no point because to my best knowledge the engine lacks the features that are needed to display them. @wowgetoffyourcellphone made some designs for a new UI, but someone more programming inclined would need to implement them. I haven't heard or seen anything about @Lion.Kanzensince this summer... Hopefully he's OK.
Anyway...
@carpinchonegro, welcome to the forum! I think @wowgetoffyourcellphone can find something for you to help with his mod. If not, I'm sure whoever kills @Stan` and take the green laurel of 0 A.D. project emperor will have some work for you. However, that might take a while. Someone told Stan what happened to Nero, and he hasn't had a bath in months!
Joking (of course) Well, at least part of it. Someone should be able to help you get started, @carpinchonegro, I found this on the developer wiki: https://trac.wildfiregames.com/wiki/WikiStart#Forartists: It looks mostly for 3D artists, but still it might be worth skimming. Also, there's a forum dedicated to 0 A.D.'s art division here: https://wildfiregames.com/forum/forum/409-art-development/
Off-topic, but do we have any updates on project governance? @Vanthaand I want to start moving articles mainstream and I have some questions about updating writing guidelines/where we put extra stuff/oversight on the encyclopedia going forward as well as the important question of how do we even start?