I have a gut feeling that slow weapons with high max damage and wide range will turn out to be best. But I am also concerned with the mace+shield combo, since often shields have passive healing bonuses or healing procs that are vital to an inquisitor’s other role in a group — healing…

Consider the following:

1. Two weapons with the same Damage Rating will do the same amount of damage over a given amount of time.
2. For (a) to be true, a faster weapon must have a lower average damage than a slower one, for a given damage rating.
3. Thus the faster weapon will crit more often but, for a given ratio of max to min damage (shown above as the damage ratio) but those crits will be for less, proportional to the average damage.
4. Again, on average, those lesser crits happening more often will equal the slower, larger crits for a given damage ratio and damage rating.
5. But slower weapons tend to have the larger damage ratio (for no good reason I can see) as well as the larger average damage (for a very good reason, see (b)).
6. Thus to maximise the total damage gained by crits, you need the highest possible damage ratio which means the highest possible max damage which may well mean the slowest weapon.
7. Finally the further advantage of a slow weapon is that you are less likely to hit any haste caps.

People tend to favor slower weapons to increase the crit chance per swing. But when you have 100% crits, weapon speed might become a much larger issue.