Also, considering the comparisons already being made to ESB, it seems unlikely that Rian would copy the Battle of Hoth wholesale.
So, there is no Death Star / Starkiller weapon in this film, and while there are Walkers on Crait, their new design would suggest they're impervious to the harpoon trick. Rian Johnson has a difficult task in that he has to create a climactic action sequence that doesn't borrow from the original films.
This got me to thinking about how the Battle of Crait ends in THE LAST JEDI, and I've got a cool idea for how that battle might end. I recently saw this post on the Star Wars Leaks Reddit ( ) that shows a LEGO Poe Dameron figure with what looks to be a bomb or detonator of some kind.