This is my old mod, I love the starting weapon for each companion, i think they design is match with each character. (for example is isabella starting daggers, for me, all other dagger ingame is sometimes too big or too small. yes im complaining like orlesian do! there is no dagger ingame that match with isabella except her own dagger.) 

The problem is all of those weapons, so this mod will add stats to hawke and all his companion starting weapon except varric. varric weapon is very strong if it already have 4 rune slots and already improved with lv-up. The stats i give them is based from another weapon ingame so i think it will not overpowered.

This mod also tweak some stat for Staff of Parthalan, mage hawke signature weapon so it is not very weak.

Some item like Warrior and Rouge Hawke signature weapon cannot be obtained by any normal means, so use waddi to get them:
WADDI - Expandable add item script with input window at Dragon Age 2 Nexus - mods and community

Caution!
1. This mod will conflict with all other mod that modify any weapon and armor in game. Because of that I make all other weapon and armor improved with level up too. (I also added extra rune slot to Bassrath-Kata because the weapon is great).
2. I put a "All starting and signature weapon improved" on main file download and "All weapon and armor improved" on Miscellaneous download. Choose only one! do not install both or it will conflict. the "All starting and signature weapon improved" mod already included in "All weapon and armor improved" mod.