I think it would be nice to have your base actually be destroyed if you don’t repair it before it’s heath reaches a critical level (like the cyclops). Yes, it would be annoying at times, but you could be able to repair it using the habitat builder tool.
As for Subnautica, I think they've closed further developments on that now. However, I saw some info on this subject leaking out of the Below Zero trello. If you don't mind extreme spoilers: https://www.youtube.com/channel/UCBGbTTcgn8AVEsEWdT3tI3Q
Looks like Arctic base destruction is likely, but it's unclear if it's only a scripted event and/or a regular play-mechanic. But it also seems the your base has a Control Room that monitors each compartment's integrity, so hopefully it includes the latter.
In Subnautica, the devs like to go for realism (most of the time) but if this happened, I would stock up on lithium make as many reinforcements as possible.
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https://www.youtube.com/channel/UCBGbTTcgn8AVEsEWdT3tI3Q