I get a kick out of kit-bashing. I enjoy taking someone's idea for a figure and expanding on it, whether it be as simple as adding a couple of ammo pouches to a WH40K Imperial guardsman, or going to town and transforming a figure extensively.
Then some sharp black fatigues, and a Dragonforge base (my favourite, the Broken Wasteland Set).
And voila! a tough squad leader for a 10-man kill team.