I've always found the 10% hard flux dissipation to be fairly underwhelming. I can see it helping the AI in situations where the AI is acting overly conservative, but I really don't see much value for the player. I can just avoid situations where it would matter by piloting and managing flux/shields well. With high tech, I can back off and vent whenever I want, which is much better than sitting with shields up, and for low tech I can armor tank and shield flicker to manage flux. Mid tech can do a bit of each of those strategies.
Also, I feel like most of the time if I am in a situation where a small amount of flux would make the difference with overloading or taking damage, I was probably just fighting and have some soft flux built up from shooting. If I can back off long enough to let that soft flux dissipate, then I can probably just get back to my allies and vent.
On a random note, it's difficult to tell how much of your flux is hard vs soft flux. I wish they were displayed with different colors in the flux bar, even different shades of blue would help.