The antonym for "more factional" is "less factional." Being less factional means being more unified and cooperative, whereas being more factional means being more divided and contentious. This can be seen in various settings, such as politics, sports teams, or even in social groups. In a less factional environment, people are able to work together towards a common goal, regardless of their differences. On the other hand, a more factional environment can quickly become toxic and lead to negative outcomes. By promoting less factional behavior, individuals and groups can foster a more positive and productive atmosphere.