Since I got many requests and questions on this issue I will make this official addition to Disgruntled Goat's announcement:
From now on I will follow DG's example and I will not allow texture or model modifications of my units without my permission. Everything he said applies to my factions:
It is not my intention to forbid anyone making worse or better units than mine or to suppress anyone's work, but I have worked hard and with a lot of heart for over a year for this mod and so you will have to live with my design decisions.
The same goes for all units of TATW unless their specific creators will explicit allow the modification of their factions and units. I will update this post with the decisions of the individual modders...
Already finished units by the community don't have to be removed, unless it is requested by their respective creator(s).
You can ask me for permission to use my units for any sub-mod via pm, but I will decide that individually.
Thanks