I like the Borg ground invasion, and even quite like the fact its not always open so that its not farmed to death or grows stale (although i think it should be once a day) but i think its a zone that can be built further on.
I noticed there was a comm station area with a banner, tent and transporter pad, that suggests there is another section, at least in the original design. I would like to see this added.
I also think the probe interior itself is something that could be added as a very hard mission. As when you play it, it does feel like their should be a mission inside to wrap the action up. While the Gorn boss is epic, it feels slightly anticlimactic to just fight him outside.