Ok so to sum it up for me...
Tiggy is really as ridiculous as we heard (even more so with +1W) apparently... oh well, poster child bonus i guess
White Scars sound really good (Skilled Rider, Hit&Run and Scout, plus all Bike squads as Troops? yes please...)
ImpFists sound solid (and who really wants Fists to be anything but rock solid? )
Templars sound all right as well, although far less unique than before
IH needed a Character... *sigh*
Salamanders: re-roll saves against flames is fun, otherwise much as before, without the bonus to Thunder Hammers - fine with me
RG stealth trait is very meh indeed, but the bonus to Jump Packs is rather neat (at least it works on Vanguard Vets as well as Assault Squad...)