I'm going to throw a few simple JCS-able plus feature ideas;
1. Assign ammo type to a gun barrel. Yeah, giving a selection of current ammo only to host is an issue that could be fixed. Though it's likely not as easy to fix.
2. Sync options to swinging vines.
3. A "Down" parameter on one ways that allows you to go down if you press down. (technically it then becomes a two-way, but who cares). Probably the most complex to implement.