Finally had a play with this figure, a few weeks after the other three deluxes.
I wasn't missing much.

Very disappointing engineering. The simpler conversions should be expected to have all its parts lock together in both modes, not sit loosely to make the mode a mess of loose parts.
The tail section in both modes should have latched onto something. One bit that was meant to plug into something (the yellow bit with the robot head attached) didn't plug in easily (I could only get one of the two tabs in).
The weapon is difficult to attach in beast mode, while the legs have no real conversion element to them at all (they don't even straighten out properly in robot mode).

The one thing interesting I did notice (which was a bit of a waste of effort if it is difficult to find), is that this figure does indeed incorporate the same plastic-colour gimmick as the other three Deluxes - the purple plastic parts of the feet have gold splotches of plastic colour in them. At first I thought it was just a topical stain, but it wouldn't wipe off, so had a closer look and could just make out the tell-tale sign of secondary plastic pigment like the other three toys.

Avoid unless you like beasts, ugly TFs, or if it is in the cartoon and you collect show characters.