Q: Why are all the races/species the same height?

A: BF2 only supports one skeleton per team. When making infantry models our modellers use standard soldier template of the DICE reference soldier model for comparing the height and dimensions. We use the existing skeleton as this allows us to reuse existing animations and tweak them if needed. This speeds up development.
Another problem that the singular skeleton per race creates is that certain infantry units for certain races can’t be made, and some races can’t be made at all because of the diversity in height and the number of limbs.
In the Imperial Guard Ogryns and Ratling snipers have to be left out. In the Ork armies we can not accurately show the difference in height between the weaker and tougher Orks and using grots/Gretchen can not be included. So the most common sense thing to do is to use the most soldiers types that share the same height.

Q: Why do you not make custom skeletons to have the races the correct size?

A: The developers understand the above method does not truly represent Warhammer 40k race height and it’s a trade off we have chosen to speed up development. Below is an explanation of the alternate option and why it is not used.

Custom skeletons can be created, however a new one requires 130+ unique custom animations to be made for it and even more to go with each weapon, then there is a lot of testing that needs to be done to spot visual bugs such as clipping. We simply do not have the manpower and resources to be able to do this, only a commercial games developer would. If we did make custom skeletons the progress and production of the mod would be slowed down significantly and BF3 would probably be out by the time we are finished! There are six races to complete; when we do finish them eventually we will revisit this method!

Make some "dead Ewoks with stones and bows, smashed by AT-STs feets and blasters" statics for the endor maps...