So I don't forget - the craziest boss monster I can imagine

[RangerWickett]

It's an AT-ST which was downed, then became the lair of a sarlacc. Who knows what a sarlacc looks like under the sand. Who's to say it couldn't have more tendrils that could move the walker's legs and let it chase down prey like a tentacled t-rex.

 

[RangerWickett]

And I Googled it.

Of course this exists.

 

[Olgar Shiverstone]

How about a rancor Jedi with an appropriatey sized lightsaber?