Pseudo-Counterpoint
On the other hand, a couple of players new to the HERO system (narrative-system folks familiar with White Wolf & L5R) LOVED the HERO speed table.
The said it REALLY drives home the effect of someone who moves faster than you by forcing you. You're forced to take defensive actions, or to wait helplessly and hope that you're not the one attacked...
The chaos of combat can still be reflected by requiring perception rolls to keep track of folks that fall out of your field of view. Otherwise, you suffer OCV / DCV penalties against them.
Alternately, you could just use the SPD stat as the number of actions per turn, and go in order of DEX, one action per.