Straying into theorycrafting even further - very good points, but it doesn't change the level of industry that players can exert in a game space. If FDev make the bases destructible in some way, then players will destroy them regardless of whether they take 5 minutes or 5 months to make. Nor will it matter how convoluted you make the destruction - I've FC'ed/co-FC'ed on station destruction and fleet ops in Eve and the level of tactical (and strategic) co-ordination displayed is remarkable (I know some ex and serving military guys like to use it for this purpose), so its not always a case of random ganking/joker style "watching the world burn".Except in EVE you can see the pits of humanity, a game of intrigue and betrayal from within, worse than Game of Thrones at their best. Months of infiltration just to take revenge on a single person, people camping others for months JUST TO DESTROY THAT ONE TITAN!!! As you said, it takes months to build a titan and thousands of players. And some players make it their goal to destroy them because they can. How would you feel as the owner of the titan, having worked on it for 4-6 months, they jump you, inhibit your jumping and blow you away - Because they can - how would you feel?
So the original point still stands i.e. I hope FDev know what they are letting themselves in for with base building and design accordingly.
Hopefully if base building does come, then it is modular, so you can build an "Obi-Wan Kenobi" single man dwelling/landing pad in a few days effort or a larger base/structure using the kind of fleet/alliance co-ordination Eve displays. Provided you can "stealth"/camouflage the smaller structures in some way then I'm sure they'll remain largely hidden amongst the 400 billion star systems (approx 2.4 trillion landable planets) we have today.