That is looking awesome so far o-o I love RTS too :D
I've just come out of college, so i've not got much to do until September, been looking for some stuff to do spriting wise o: Especially considering all the games i've committed myself to spriting wise seem to have never gone anywhere :S So it'd be nice to work on something near complete xD
Sadly i've not got much to show as far as examples go (i'm currently working on making a pixeling portfolio for myself >.< but it's only got a few pieces in so far xD)
But if you do need help with any 2D sprite, icons and such and wouldn't mind letting me help, i'd love to offer my services!
I understand if the lack of examples puts you off though, maybe you could set me a spriting task for the game, have me complete it and see whether you like the outcome or not before deciding whether to let me help? c:
I don't know, either way, best of luck with the project :D It's looking amazing so far c: