Remember about translations, if you have any choice then try to avoid names like "Medjay"
which is ~ untranslatable and will be a bit confusing.
We could use Medjay for English, and then use the closest derivative for other languages. Though perhaps it could be called Pharaoh's Guard, which I imagine would translate to most common languages. I just hate using generic names for everything.
It's great that you are renewing this effort, Archmage! 
Titi (who would need to comment on any changes to the default tech tree) is not going to be able to comment for a couple weeks.
But keep in mind that you can always make alternatives available on your own, such as for testing / prooving your point, so don't let the lack of feedback discourage you on that.
Thank you.

I'd rather wait for Titi to respond, because I'm intending for this to update the Megapack shipped with MG by default. If he's not on board then there's little point of adding units.
You forgot the Chicken! Is the chicken have to be re-made too?
From the starting thread, it appears that MegaGlest-Refit might have been put on hold for a long time due to declining progress. I hope this turns out really well, somehow better than the Refit; we haven't seen any interesting modifications for months to be honest.
The Refit project was just too much to do, and we didn't have enough skilled people to make much of a dent in the amount of work required. The concepts of the refit are still interesting though, and I feel like setting the MG factions in a fictional world like Tech and Magic makes a lot more sense. I've always found "Magitech vs Historically-based factions" to be a bad blend.
About the Chicken, isn't it good enough? Maybe the death animation where it runs around in a circle is kinda bad, but I don't think it's worth a full remake.
People need to get back into modding. Now that I'm out of school, I finally have some time and motivation back. I also feel that the bigger the punch MegaGlest can make on Steam, the better. Better graphics, and more mods will only help MG grow on Steam.
Edit: Added some Old vs New pictures on the first post. Check them out!