Should just be renamed Big-Brotherbase, or Banned-for-Life-and-Won't-Tell-You-Whybase. Coinbase is famous for suddenly disabling accounts and refusing to give an explanation. At least a traditional bank will normally explain the circumstances.
Got one of their arbitrary sucks-for-you letters last year. No way would I ever recommend them to anyone.
In my case I'm a mining developer, so I have a huge digital currency profile. Coinbase is horrifically opaque and impossible to deal with if they flag you unlike most other organizations.
E: I'll just lump some more examples of their corporate ineptitude.
1. Recently I asked them for a dump of trades and fees executed on their exchange for audit and record keeping purposes. All they had were records of deposits and withdrawls but none of the actual trades. So no cost-basis data and now a huge accounting headache.
2. When my personal account got locked, we separately had an application out for an institutional account. 4 months go by and suddenly I get emails saying "we're ready to proceed with your institutional account". Excuse me? Told them to fix my personal account first. Never heard back.