Thank you for mentioning that, I forgot to include bazookas on the Armies table that controls all unit stats in the mod.
I decided to try something new for BNW. In the past I held unit build costs to a solid 10*strength formula, used maintenance to customize units. The cost over-time usually matters more than the build cost. It also ensures our gold per turn drops only when we upgrade units, not just constantly rising when we're not doing anything. However, this approach doesn't always work well with some game effects like free units or leader bonuses. It also discourages upgrading a little more than I'd like.
I'm going to try adjusting build cost instead of maintenance. For example, instead of giving ships low maintenance, I will lower their build cost instead. This will obviously allow us to build and replace armies faster than the maintenance-changing approach, but it will be interesting to try out. I think it will encourage more expendable units, ones we're willing to sacrifice to protect important units. It will be easier to rebuild those expendable units if they cost less. This appeals to me because I won't obsess about having a 100% victory rate anymore. It also avoids the two main issues with the maintenance version, compatibility and upgrades.