Technical Question for the Development Team

I've always had a few techaical questions regarding skills/feats and their affect with some of the weapon types.

1) Does Cautiousness affect the amount of self healing from a Healing weapon, like rocket or flak? i.e. will it reduce the amount it does compared to if I didn't have the Cutiousness feat?

2) What would be the "sweet spot" (if any) for balancing the Vampire Skill to a Rage Weapon? I am at lev. 6 in vampire, so how much would I need to either nulify the self damage from lets say a Rage 6 or whatever... Or is there one? I want to max out vampire to help counter the damage from a rage. Right now, I'm not there.

3) With the skill Counter Shove...I have 1 or 2 levels in that, I think. Is it directly related to the weapon used on me, or the effect that it has on me. i.e. If I have a Sturdy weaopn, which nulifies the kinetics of the impact on me, does that also eliminate the counter to the enimy?

Some good questions there.
I think the general order is Firing weapon, abilities, victims weapon.

I might be wrong, but I would say

1) The healing weapon bit does its stuff and sets the damage to zero before the cautiousness ability gets its hands on it.

2) Sorry, there isn't one. Vampire does not work if the weapon is a Rage weapon.

3) Countershove should get actioned before the Sturdy nullifies the Momentum.