That they come to Earth to search for a mystical object known as "The Ark of Mysteries" that they believe will give them power to attack the humans severely, but not with the Doctor in the way of their plans.

A story where the Krotons try to harvest mental energy on Dulcis.

@TheCritic&RobloxMaster21 the Kroton imperium is separated from Earth by the Dalek Empire (or two different Dalek Empires depending on the Timeline) as well as several other major galactic powers and in Alien Bodies only got to Earth by hijacking a Dalek ship and then utilising it’s technology and bring a small force to earth to get the Doctors dead body. But beyond that Earth is so far from and latter the Earth Empire that the only reason they would come to earth to acquire an object of power to use against another galactic power as they would be unlikely to attack humanity. The coming to earth for an object of power would work however but not for the purpose to attack humans.

How would the Cybermen play out in this?

@Zeronizer i would take a look at the occasional references to a Cybergod and the various Factions of Cybermen such as the CyberFaction, the Neomorphs, Isomorphs, Cybusmen and other cyber groups and have a civil war as well as a loom at the hunted religion of the Cybermen. They would be a major power in this new Time War, the Voord would be a particularly powerful Cyber Faction who as I have said before would be behind the whole war. The Cybermen would be unlikely to encounter the Krotons however as several sources show their empire bordering both the Dalek Empire and the Dominators/Quark Domination and thus they can not have a border with the Kroton Imperium. So you would have the Cybermen fighting the Daleks and themselves on one front. Whilst the Krotons are only fighting the Daleks as they are the greatest power with a direct border with the Kroton Imperium, this would thus make the Krotons one of the most powerful factions in the Time War as they would only be fighting on one front (other than Voord abductions, to both study them and escalate the War.). With possible ending with the Krotons as the dominant power in the Galaxy as well as potentially becoming new lords of time. Of course the Krotons are not a Galaxy spanning Empire only having power in one whilst both the Dominators/Quarks and the Daleks control multiple galaxies (depending on the Dalek era, if this is post Great War first civil war, but pre second civil War. Then the Dalek Empire only exists within Mutters Spiral, of course the New Dalek Paradigm (and it’s successor) are a temporal empire which exists in various galaxies at different times, however they still act as a massive barrier between the Krotons and the Cybermen factions)

I like the idea of an Alien Bodies adaptation. Or a sequel?

@Aquanafrahudy Faction Paradox?!??!!!!!!?!!!

@Anastasia Cousins I don't know, a sequelly sequel.

@Aquanafrahudy well we could have a prequel sequel prequel thing. Dealing with the mystery concerning the mystery about the Doctors death and survival.

@Anastasia Cousins we could have the Doctor and his companions try to solve what’s happening, eventually getting dragged into the conflict and conspiracy.