This would require total rework on balance as a whole. Since a lot of stuff goes around max armor and a chance to take out some fighters instantly. Increasing damage of razors, mines or misiles would skrew up entire balance. And it's not that simple as to rise damage per second procentage..
However, not like such changes needs to take place at all. Longer fights are actually quite fun. And there will be a portion of people who now want faster fights to get back to longer fights if such system is introduced someday.
