Schelling Segregation:

Is it possible to extend this concept to other contentedness thresholds, and construct a society in which:

everybody is content, and

almost everybody has a $(1-$t$)$ fraction of their friends a different type than themself?

For segregation on a line, answer this for the specific values t$=0\mathrm{.}25$ and t$=0\mathrm{.}75.$ For example, if t$=0\mathrm{.}25,$ can you construct a society in which everybody is content, and in which everybody $($or almost everybody$)$ has $75\%$ of their friends a different type than themself? Clearly explain any obstacles you encounter in completing this.