When it comes to modifications, I'd say he hasn't got anything obvious yet... Darius has finished paying for the Rogue Marine Advance, but hasn't gotten any of the related advantages yet... and Nerves of Steel, Quick Draw, and Ambidexterity (which is what that advance gives him) aren't going to be huge physical changes, especially as he got two of them through his Arch-Militant class.<br/><br/>On another note... 40 toughness for Darius's guys?  Wow... I was hoping for the low 30's, so that's a serious improvement!  I was hoping for full bolter proficiency as well, of course, but what they've got is plenty to start with.  They'll get fully proficient if they survive their first mission using them, I expect.<br/><br/>I know it's not a huge deal, training one squad of 5 among nearly a thousand such men under Cortez's command, but Darius is still thinking pretty small at the moment.  That, and when Cortez and company need backup but cannot bring a large number, having some seriously good elite troops will almost certainly come in handy... even if they're never going to be PC quality.<br/><br/>Plus, if they get good enough, Darius may end up putting them in charge of training squads themselves... make them the leaders of new groups of prospective elites... although that's for a long way in the future, I think.