Yeah... I personally want to see Team Rodimus prevail because I really like Megatron's whole journey of personal redemption. But at the same time, I can completely understand where Getaway and the remaining crew of the Lost Light are coming from, as they feel that there has been a gross miscarriage of justice. And they're absolutely right in that Megatron has not been seen as adequately being made to pay for his crimes.
Of course, Getaway and his supporters are arguably behaving more like Decepticons (or like Prowl ); they are being consequentialists (i.e. the ends justify the means), whereas Team Rodimus are acting more like Autobots (or Optimus Prime ); they are being deontologists (i.e. the ends can never justify the means). While characters like Prowl, Getaway and Atomiser have always been consequentialistic utilitarians in the IDW universe, I don't know if the same could be said for most Autobots. I'd say that the Autobot cause tends to attract deontologists while the Decepticon cause tends to attract consequentialists (although they do have consequentialists too, such as Soundwave and Thundercracker, and the reformed Megatron [although he's officially an Autobot now] etc.). So it seems to me that the bulk of the crew were drawn towards taking this extremely consequentialistic action due to desperation; driven by those with a more natural inclination/disposition. I don't know if those like Blaster are necessarily enthused about taking this course of action, but rather feeling like they have no other reasonable choice but to do so in the name of justice... because there is simply no other way. Somewhat similar to why vigilante style super heroes like Batman and Daredevil don masks in order to bring justice to criminals who otherwise slip through the legal system. These Autobots seem to believe that the system has failed them and they have little other recourse. The fact that they've even managed to set them up with the DJD just goes to show how utterly desperate they must be.
As the audience, we know that Megatron has done a lot of good and has come a long way in achieving personal redemption. But now that I think about it, who else outside of Team Rodimus have personally witnessed this reformation in Megatron? Without witnessing this, the rest of the crew may continue to view Megatron as a villain. And the other question is -- how much of Megatron's reformation is intrinsically authentic, and how much of it is extrinsically induced by his watered down Energon? That spontaneous smack-down of Minimus Ambus plus the self-harm to his own head/helmet leaves unanswered questions. I really hope that it's the former though... the latter feels like a cheap cop out to allow Megatron to suddenly revert back to his old ways. Gah. Or perhaps the truth lies midway between these two extremes.