Admiral Holdo’s hyperspace-kamikaze in The Last Jedi. I mean, why hasn’t anyone used this in any space battle before, ever?
These may be of some interest / information / alternative viewpoints etc…
‘Did Hyperspace Ramming exist before THE LAST JEDI?’:-
https://www.youtube.com/watch?v=scFX3fdp1f0 - by EckhartsLadder
‘Hyperspeed Ramming: Does it break Star Wars lore?’:-
https://www.youtube.com/watch?v=7pLdjf2NSiU - by EC Henry
& maybe…
‘The Last Jedi SOLVES Space Combat’:-
https://www.youtube.com/watch?v=zmk3YS7xLOo - also by EC Henry