[Pandawithissues...]

not really sure you could do a handgunner gun line army for empire but you coulfd easily do a gun line with guard. Ill have to think on this some more

An empire gunline is basically ALL the empire armies you see.

Much as i prefer fantasy to 40k jac, i think 40k is easier to theme with, including colour schemes etc.

However, tactically, themed warhammer armies can be more effective than their 40k counterparts, and you can do well with lots of varient lists. Ie, wood elf forest spirits only, dwarf h2h infantry only. The possibilities are endless if you are willing to limit your own choices.