Eh, I don't buy the Illusive Man bit.
There is no good reason for him to want to kill you, even if you did choose to piss him off at the end of ME2. Sure, you told him you're quitting and perhaps gave him the finger to boot. Sure, your reputation's in the mud thanks to him, so the galaxy as a whole might not be as happy with you as it used to be (if it ever was). But he's already poured so many resources into you and your team. You've already done the impossible. No matter how mad he is, he knows you're the most qualified and has the best chance of preventing galactic genocide. He knows you're as worried about the Reapers as he is, if not more so. It just doesn't make sense that he'd try to kill you after all that trouble and with the stakes so high.
And anyway, knowing the Illusive Man, I'd think he'd have asked Miranda to install a "self-destruct" switch while she was reconstructing you that he could activate remotely. Though then again, it probably rely on the Mass Relay's comm units to work, but like I said, he has no good reason to want to kill you yet.
And as for Liara, we who have played her related DLC (or spoiled ourselves silly) know that she really shouldn't be on your team... I guess she'd be on your team if you didn't do the DLC mission? Though if we did, and she isn't on our team, I would imagine we'd get terrific compensation from her... Or maybe Feron would just take her slot or something...