A good example of this sort of thing is the Vex, who converted the entirety of Mercury into a giant computer in only a few years thanks to time shenanigans, and regularly do the same to any planetary body they occupy, such as Nessus.
Mars is a very viable option for our nanomachine protagonist, with its easily-accessible iron oxide surface contents. If Taylor had access to an alternate Earth that never developed life, say one that didn't recover from the impact that created our moon, she wouldn't hesitate to seed it.
Now, I'm not saying that'll definitely happen, just that it could.
I for one welcome the inevitable Taylor Technological Singularity. And your comment about Mars just made me think of an amusing scene. Hopefully I'll do it some justice with my crap writing:
~'~'~
Armsmaster continued to review the report in front of him. It was getting late, and a small part of himself was once envying his gun wielding colleague's ability to ignore the need to sleep. A few minutes later a chime alerted him to an incoming call from Dragon. "Colin, do you have a moment?"
"I have to finish this paperwork on a new project for the Director soon, but I can spare a few minutes."
"Thank you." Dragon replied. He could clearly hear an undercurrent of worry in his fellow tinker's tone that immediately had him on edge. "I've recently come across an anomaly from a recent review of Simurgh satellite observational data that is concerning."
Armsmaster frowned at that. The last thing anyone want to hear was the words 'anomaly' and 'Simurgh' in the same sentence. "What kind of anomaly are you talking about? She shouldn't be going active yet. The last Enbringer attack was only three weeks ago."
"It's not the Simurgh, Colin." Dragon noted with a hint of trepidation. "It's Mars."
"Mars?"
"You should be receiving an email containing a recent image of Mars right now."
Without further prompting he pulled up the image in question. Most of it was focused on the angelic figure of the Enbringer itself. However, his attention was centered on the circled dimly lit ball of light over the shoulder of the creature in orbit. For a moment something about it looked off. It took him a few moments to realize what the problem was. "Shouldn't Mars be a pale red?"
"Yes, it should. But it's not and that's what is worrying me. I've already reviewed other satellite and telescopic imagery from the last few weeks. I've noted a pronounced decrease in the red coloration of Mars over the last ten days."
"Do you have any theories?"
"Nothing concrete. At least not yet." Dragon sighed. "However, there's a very distinct possibility that this isn't a natural occurrence. The change has just been too fast and we have no historical documentation that could help account for this phenomenon. And there's one more thing... this hasn't been a gradual change either. As far as I've been able to determine, once the process started it progressed at an exponential rate. If this continues at the expected pace then in a few days we will no longer be able to call Mars the red planet."
Colin said nothing as he continued to stare at the photo in front of him. A sinking feeling formed in the pit of his stomach, and even though whatever was happening was a world away... right now it didn't feel far enough.