A couple of comments on why I have not used certain options:
* Auxilia: I recognise they would be good, and I would like to use them, but the current models are kind of ugly. I will wait until they get new sculpts.
* Bolts: I felt that Fusiliers were a better option since they were cheaper, especially at 300 points when I add a TAG to the list.
* Machinist/Trauma-Doc: both seem like awful specialist options. So-so models too.
* Swiss Guard: Seems a sweet unit, but waaaaay too expensive. I would probably field one at 300 points if I did not use a TAG.
200 points, 4 SWC
298 points, 6 SWC
As an aside, I was thinking of using some of my 40K models to proxy the REMs until I can get them. Is a 35mm base (eg Tyranid Warrior) the right size?