So far both Bloodshot and Shadowman have been optioned by studios, with rumors of a Harbinger movie in the past. Shadowman seems the most likely to me because it is actively being written into script form right now by J. Michael Straczynski. I haven't heard about Bloodshot in a couple of years, just that Sony optioned it. Harbinger was only really rumored, not sure if anyone bought the rights to it. Of the other two current Valiant comics, X-O Manowar would be way easier to make into a movie than Archer & Armstrong.