There are advantages and disadvantages to each of these gaming dice systems. Which of these systems are better?

System 1:

D4, D6, D8, D10, D12, and D20 are all used to represent weapons rolls which must beat or tie a "4" to count as a hit. More powerful units, such as a Cannon, roll a bigger die in this system, while the weakest unit, perhaps a Worker, would roll just a D4.

-Advantages:

It's perfectly scalable for individual unit types.

-Disadvantages:

If you need to roll for a big number, such as six Sword Man or even 12 Sword Man's attacks, you need to re-roll over and over.

System 2:

Uses only D6, and the "target" changes for each stronger type of unit. For example, the weakest unit, again a Worker, only gets a "hit" on a roll of "6", while the strongest units, such as a Cannon, gets a "hit" on anything except 1.

Advantage:

Large numbers of rolls can be handled in a single casting of dice, since you can easily buy sets of 12 or even 20 six-sided dice at a gaming store. This means the game doesn't need to take as long to play individual player's combat steps of their turns.

Disadvantage:

It doesn't scale as perfectly for individual units as System 1 does.

I am leaning toward converting to System 2, because it could cut 5 to 10 minutes off the length of an average game, depending on how much combat has happened throughout the game.

There are advantages and disadvantages to each of these gaming dice systems. Which of these systems are better?
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