What I am afraid of, is that the Starbase building will be the biggest grind yet.
It will be a grind. But in a recent interview, dstahl said they've 1-man guilds into consideration. He basically said even a 1-man guild will be able to get a decent starbase with considerable but not impossible effort.
Of course, I have no idea what a "decent" starbase is or what "considerable" effort actually means. Hopefully it means a lower tier starbases won't require too much grinding.