Widening class options.
I kinda got this from the Gunsligher suggestion in the news section.
First of all before you guys say "no scientific items in D3 plz", keep in mind a quote (not exactly word for word) from Qual-Kehk, barbarian merc leader of act 5, "larzuk is full of crazy ideas, he once proposed filling iron pipes with explosion powder to break the demon siege" which basically means larzuk wants to create a cannon.
So lore wise there is a scientific weapon and it wouldn't go beyond the Diablo series to have a gun or cannon.
How about a not so far'fetched class that uses simple machinery and weapons? I know its simple but no one seem to think up of it yet.
I'll be posting up that class soon.