The only way boxing would be viable would be via the use of - currently non existent - third party tools. Which I imagine will be outside of the EULA.
Not that I'm considering their use but thinking about the way they could work... You'd need a chat channel system where you control all input from one instance. It would require software that's intelligent enough to move the slave ships without direct user input - so a command that tells the shave ship to move to a coordinate, ie a point currently x distance off your port wing - where the code automatically uses thrusters and aligns the ship to get it the destination; note that this would be much easier to code if the game has an auto-pilot system already in place (another reason I never want to see auto-pilot, is the utility it gives to boxing). It would need to be capable of targeting, which would either send the existing commands or use a hack to target the same ship you are targeting, no matter what direction it is facing, then automatically face it. The rest would be command driven - fire weapons, jump, power distribution, etc.
Is it possible? Most likely. Is it likely to happen? Less likely. Would it be a ban offence to use such software? Definitely. It would be, for all intents and purposes, cheat software.
As mentioned a few times above, boxing in ED is really not going to have much game-play benefit, is potentially impossible on one PC and, even if used on multiple systems, highly impractical to manage for any tasks other than the simplest. Yes, it'll possibly be viable for mining which will be a route to earning faster cash for the main account. It could also be viable for earning cash faster on trade/courier runs (if on two or more PCs), as you'll be able to do two, or more, runs in the same time it takes to do one.
But it won't be viable for combat. And that's all that really matters to me.
