Fifty years ago, epic large scale ground battles were done with a "cast of thousands" of extras. These days, they're done with thousands of cgi characters. The latter types don't really excite me as much.
I'm not chomping at the bit for large scale space battles in Star Trek. Star Wars seems to handle that type of stuff well enough. Though a major attack on a starbase might be interesting, as long as it's not Earth as the major planet.