I think it would be cool if LEGO made sets similar to 7283 Ultimate Space Battle. It's nice to get multiple ships in a single set, but they hardly ever release star wars sets like that anymore. The last one I can think of was 75150 Vader's TIE Advanced vs. A-Wing Starfighter from 2016. I would totally buy sets that included about 3-5 ships in it if LEGO made them.
I would like to see some larger sets that can be used for army building such as a set with a few vulture droids and droid trifighters fighting a few ARC-170's or V-19 Torrent's. Or maybe even some two pack sets of a good guy vs bad guy, like a TIE Fighter vs X-Wing or Tie Interceptor vs A-Wing. Or maybe even some sets with ground vehicles like one with two AAT's and an AT-TE, or an AT-AT with some snowspeeders.
I feel like these larger battle sets would be quite popular but on the other hand they would be pretty expensive.