Well your first suggestion would allow people to easily set up super-useful bots that would not need to be managed at all. That reason alone will keep it from ever happening. Your second suggestion again sounds like a method to allow for easier mass-farming, especially coupled with your first suggestion.
Basically I would not hold my breath for either of these happening anytime soon...
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Ahh, yes I see how this could lead to farming craziness. Well, maybe coming SOON they will put the true sidekick/lackey in place. So, we create our MAIN tune, and then at level 6 or whatever, we get to create a second tune and level him up with our main and they can fight side by side. Not sure how the mechanics would work but it seems like having something like a dedicated power tray just for the sidekick would solve it.
Anyway, you are surely right about the farming crap...ugh.
No big deal. It's just that anytime we players suggest something the Devs are always going to look at it from the point of view of "how could this be exploited by players". Sadly your OP ideas would be very exploitable. 
Anyway I would love to be able to get a "Sidekick Pet" as a cool new power. It could be behave like a Lore Incarnate pet with hardwired powers. The cool part would be that we could create a costume for it so that it could look like anything we wanted. 
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More than 8 man teams won't happen any time soon. All of the instanced missions in regular content are designed with 8 man teams in mind and appropriate spawn sizes.
Adding more players would mean adding more mobs which would mean a huge mess - a lot of maps struggle to fit all the mobs in as it is, especially for groups like the Council who have larger than average spawn sizes to start with.
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Please give us the ability to FOLLOW someone like the Pets follow! I mean, the Pets will find a way to get to me, jumping...flying, whatever. Please allow us a second type of follow command that will let our tunes follow someone much like our 'smarter' pets.
Also, please allow us more than 8 people on a team. I know we can do leagues but I would LOVE to have more than an 8 man army for regular missions. Thanks!
By the way, I have 6 paid accounts and run them all simultaneously so these two things would REALLY help me out. A.D.H.D. has cost me PLENTY on this game over the years! Hehee.
`D