Falcon Heavy - What can you do with 53 tonnes?

* I'm trying to 'find' payloads for this vehicle (although I'm sure Mr
Musk and company have ideas)....

* Dragon is a tad on the small size, but what about a sort of
'midi-shuttle'? A reuseable spaceplane would be a handy replacement for
STS.

* The payload fairing is way too small for the payload capacity, so will
there be other payload fairings for the FHeavy?

* Space stations, like Bigelow's BA-330?

* Moon program? I've come up with an idea that would have required
seven 'Delta V' (an LV that consists of four Delta IV CBC's strapped to
a New Core Stage with two RS-68 engines and the same burn time as the
CBC and a new upper stage with two RL-60/MB-60 engines; payload to LEO
was about 55 tonnes - 2 more than FHeavy, but I think I can tweek the
design) LV's and would put people back on the Moon in less than six
years. That program would cost over $300million per launch - SpaceX
just 'saved' me over $1.2 billion per year - more flights, or less
overall cost, or more development.

Mind you, Dragon might not be able to deal with the higher G ratings
needed for Lunar return, so a new crew return vehicle might be needed.

* Large interplanetary probes? What about a lander on Europa, Ganymede
or Callisto to perform a search for life. The lander would have to be
somewhat bigger than Viking (Mars) to carry a drilling rig, or it could
use a RTG-powered 'melter' to get through the ice.

Any other ideas? What about the much-touted fuel depot?