the Acolytes were the foils of the X-men so if the X-men supported each other and worked in organized teams, the Acolytes were divided between themselves and respected strenght over supporting each other. The problem with the Acolytes is that they were reunited first by Fabian Cortez as part of his plot to kill Magneto and later by Exodus but they didn´t have a defined mission to acomplish like the X-men had and this also affected their hability to work as a unit. Cargill decided to become and X-man after she had a change of heart and I am not sure what happened to Scanner, if she was living on Genosha it´s possible she´s still dead or she may be living on Krakoa already.
Agreed completely this ere would be a lot better if we got the chance to see the pov of the characters and their decisions and I hope the writers address this at some point appart from the revelation of Onslaught, he may explain some OOC moments from the characters but not those who have not died or the fact they seem to reactive when they used to always give their pov.
Yes Arakko follows Apocalypse´s belief of survival of the fittest so if you are strong you deserve to be in the ruling goverment and the rest must follow you but given they have been around for hundreds of years some of their council members have a lot of experience to go with their power but there are others who are also quite unstable who are not fit to rule but their powers allow them to do precisely this.
Krakoa is quite a new entity and their Council was made more to represent the different elements of their country and main mutant forces than about power and it´s a good thing because this allow all perspectives to be present in the decision making.