A star wars battlefront style game (with no microtransactions) would probably be DLC 1 or 2 for the bossfights game

My idea is that the Multiverse is at war and you have to pick a side. You could pick the stars, the Stickmen, the Inkverse, the Eggs, etc. Then you play an short single player campaign or multiplayer battles on different maps.

what about these red losers with a masochist warlord as their military general

You can play as them as well

Here's my idea:
Just endless combat, with the occasional boss spawning (like an Inkla God, or an Egg Mecha). There is no round system, you just fight endlessly. You can quit whenever you want of course, it's just you can pop in, get a few kills, and leave. There are different servers of course, to keep everything from overflowing. You can get boosts from racking up a kill-streak, more power and speed, special abilities, more HP and faster regen, until eventually you one shot everything just by touching it (You'll need something like 100 kills to reach that, and if you die your kill-streak is reset).

Endless fun and chaos.

(I used a battlefront 2 poster as an example of what it could be like)

You could have air fighters, space fighters, ground fighters, and potentially sea fighters... however you better have lots of space in your game playing device

I'm probably gonna make a separate post talking about the short single player campaign

Or maybe a sequel

Like how the PvZ garden warfare games are nearly nothing like normal PvZ

Actually I'd think it'd be better as a spin-off

Here's my idea:
Just endless combat, with the occasional boss spawning (like an Inkla God, or an Egg Mecha). There is no round system, you just fight endlessly. You can quit whenever you want of course, it's just you can pop in, get a few kills, and leave. There are different servers of course, to keep everything from overflowing. You can get boosts from racking up a kill-streak, more power and speed, special abilities, more HP and faster regen, until eventually you one shot everything just by touching it (You'll need something like 100 kills to reach that, and if you die your kill-streak is reset).

Endless fun and chaos.

Meta people would ruin the fun of that and so would spawncampers

There will be certain bases that it is impossible for anyone outside of that team can go into.

Then that team would stay in there

You can't kill anyone while inside of it either. There are no ways to kill anyone while inside. The doors are shut. The windows cannot be opened. And even then, we'll make it to where you can't attack while inside of the bases.

Then people would just make the game hell for the others somehow

Then we'll figure out a way to make that impossible

That would be impossible. People are people and will always find ways to make things hell for other people

That's what most shooter games are like.