Hmm, Proud Clod doesn't fit the rest of the structure of the riddle
so I guess there's more to him (first line = summon, second line =
location, exept for Proud Clod, asuming that "use surer feet or land
deformed" points at a location too).

"From Alpha to Omega the elements combined" could refer to the
summons once again (since there's probably a summon for each
element). I'm thinking Alpha to Omega could be translated as the
beginning and end. From the beginning to the end the elements combined, still doesn't ring a bell.

P.S. 1> Wait a minute, didn't Tango refer to the dance part of the
riddle? Chocobos ain't doing the tango or somethign.

P.S. 2> Small point of critique, on this moment there's some nasty
things in your riddle. Example:

"Responding with dance is slightly strange,
Do spaceship watchers ever change?"

You made it look like the spaceship watchers directly relate to the
dance, as in spaceship watchers are the ones dancing. I'm sure
they're related but you posted two parts as one sentence, sugesting
a direct relationship between the parts.