Considering basarios is back with its rock and mineral covered body, I kinda just want a great sword line that uses basarios and gravios materials, and bears the resemblance of a macuahuitl (except with the stone carapaces of monsters instead of wood, and sharpened ores instead of obsidian). Nothing much. Just a giant macuahuitl great sword that sacrifices a good amount of durability for above average attack and sharpness for its availability (It lacks durability, but has good attack power and levels of sharpness concurrent to the quest levels it is possible to either forge or upgrade in).
The artisan and sharpness skills would not do much to improve the durability to or above the average durability of greatswords at that quest level unless both skills are combined... I think. I don't really care if there's already swords with similar stats in the series already; it seems like each game has an assortment of great line swords most people would never use anyways (though I loved my Mcrib sword and giant golden letter opener back in tri). I don't have to have a reason to think of a basarios and gravios line of great swords. I honestly just want a weapon that bears a great resemblance to a macuahuitl.
Other than that, MH4U is looking good for me.