So this was something that was in the FDEV insider 'leak' we had several months before Odyssey launched - in many ways the leak got proven correct, even down to the project code names they were using internally. However base-building was also mentioned on that leak but never made it to the final release - perhaps cut due to timescale/resource constraints etc. I'd assume that lots of work was already done on this feature - hopefully it will get added to the game in the future still because it could potentially add quite a lot of depth to the game in the following ways:
- On foot surface gameplay would suddenly become about 1000x more interesting as players would finally be able to do something with planet surfaces than just mooch about shooting rocks.
- There would suddenly be a case for construction-focused SRV types which could be very interesting.
- Players would have a way of potentially passively generating commodities and materials (mining platforms, farms etc).
- These resources could be shared with friends or allies depending on how they setup base access permissions (a bit like fleet carriers).
- Existing commodities could finally have a use other than be simply for buying/selling to make profit - food and other supplies could be used to keep a base operational. This would require supply runs - cargo ships suddenly become important again.
- Different base types could be used for different purposes (passive income, BGS/Powerplay influence, storage, exploration hub etc).
- Player structures and even communities would spring up all over the galaxy, resulting in interesting unscripted locations for other players to explore.
- With this in mind, player bases that fall into a non-operational state could change into derelicts to be explored.
- Base raiding would/could become a thing - interesting PvP scenarios would result.
- This would also result in a need for players to setup automated security systems and defences (like turrets and skimmers)
- Base owner squadron affiliation could be used as an additional vehicle for influence on BGS factions & Powerplay.
- Bases could also be used a way of introducing squadron vs squadron warfare.
- Player bases would also provide an alternate platform for players to own large personal storage facilities other than fleet carriers, which are hugely expensive to acquire and operate (build to a level your time allows).
- (long-shot) If on the off-chance we ever get atmospheric planet landing, think how much extra player engagement there would be with a feature like this..