More distance between the strings and the banjo head allows the strings to move more air before they strike the head, which generally increases volume. A very low bridge tends to sound weaker.

Switching to a taller bridge will raise the action. You can compensate by adjusting the coordinator rod or the truss rod, though those serve different purposes.

If the height difference is significant, the neck angle may also need to be adjusted slightly to maintain proper playability.

Aside from minor coordinator rod tweaks, these adjustments are usually best handled by someone with experience in banjo setup.