Could use a few more settings, like the ranges for every shell. I'm trying to integrate it with a planet, and this remains as the final obstacle. I need to be able to set the base capsule to like 5-6 tiles higher than the current propelled one to adjust it to the local terrain.

You mean change base launcher range modifier or capsule range modifier?

Some notes if you didn't aware: launcher's base range is an integer, but capsules' range modifier is a multiplier, so it works like +10% of base range, not works as +10 tiles (despite the default base range is 100).

I made following changes:
1. Added startup settings for change launcher base range and consumption.
2. Moved the tooltip creation code of capsules to data-final-fixes. This should allow you to modify capsule properties in data-update stage from other mod.
Example code in data-update:
data.raw["mod-data"]["lct-capsule-properties"].data["lct-capsule-basic"].range_modifier = 1.5

Please let me know if this change work for you, I will release a new version once get confirmed.

Thank you, checking it when you upload it somewhere!

I really just need a reliable way to increase the radius so I can adjust it to the worldgen (which is harder to adjust to this, and then it won't create the desired effects as well). I'm using it to shoot over terrain the player can't build on.

I pushed the new update just now, you can also find the source code on git repo.
https://github.com/nbcss/logistic-cannon-transportation