I recently obtained Operation crimson hammer and got my hands on the tier 1 hammer.
As far as I can tell so far the mechanics are exactly the same between the three hammer tiers (having obtained the tier 2 hammer as well now) the reason
I wanted to clarify this fact because I plan to take the tier 1 hammer on Clockwork runs JUST for the mobility.
From my own observations so far (not officially tested) the time taken to do the dash and recover will result in other party members to overtake me.
Now based on the assumption that I will swing twice and shield cancel to repeat the dash again, Will attack speed increase help improve the mobility of the weapon?
I'll eat anyone's shoes who debates I should take the t3 hammer instead, that's not what this thread is asking.
I'm not totally clear on what you're asking. For maximum mobility, you definitely do not want to use the last swing of the combo; there is a big recovery period. Instead, you want to shield-cancel after the dash. You probably know this.
You seem to be asking also whether ASI affects the mobility? Yes, I think so. ASI speeds up your swing-dash-cancel, and so lets you complete this maneuver faster. I have done this as many as 48 times in a minute, at ASI+6. How fast can you do it at ASI+0, or whatever ASI you have?