You can indeed take a squad of veterans instead of an infantry platoon. And the vets are cool. You can have them just as vets, or upgrade them three ways.
Forward Observers - The get camo cloaks that adds to their cover save plus Snare mines, that counts as defensive grenades.
Grenadiers - Every man and their moma gets carapace armour, a 4+ save.
Demolitions - Every man gets meltabombs and one man gets a demo charge.
If you wish, you can put all three upgrades on one unit to get one heck of elite squad but also an outrageously expensive one!
However, I might, just might do something like that one day because it would be awesome to make a bunch of totally overloaded chaps packing some special stealthy armour. Somewhat like the Virtrian dragoons that works together with the Taniths and helps saving their arse in the first novel.
And then, being able to cram in three special weapons plus a heavy weapon in one squad is just too good a thing to pass up.
