How about the granatbuchse39 as a kit? With High explosive and Anti-tank rounds. We do have the Brit riflenade kit already, so why not give the Germans a cool grenade kit of some sorts.

oh, i forgot to add that I really like the idea of musicians (especially a bagpiper), it would be cool to have the instrument work as a morale or health tool. It would be so cool to hear a piper in the distance playing a wee tune and to have anyone who is close enough to the piper get totally healed or have his stamina bar fully boosted. (the stamina idea I really like)

 A british or Canadian Bagpiper's kit could have:
                               1) a Dirk (which is a short sword, or long ass knife depending on definition of its' use)
                               2) Lee Enfield No.4
                               3) Bagpipes

 for the Germans, I propose some sort of Oom- Pa- Pa Brass instrument like a tuba
 for Russians, a guitar or balalaika
 for Japanese, a woodwind flute
 for the French, a French Horn or a Harp (lol)
 for the Americans, a trumpet or a fife
 for the Italians, a clarinet (like the ones from Giarabub theme song)

 Finally, I don't know what the Finnish would play as a national instrument but how about a rack of antlers 

This would have been better off in the suggestion forum. And just because these weapons were in WWII does not mean the devs will be able to put them into the mod. I'm not sure about the first weapon but the second one you probably won't see for a while. FH2 is concentrating on the Normandy front right now, and there is question as to which front is next.