I've been thinking about writing a guide for those interested in usuing the zz_addparty console script to exceed the 3 companion limit that the game normally imposes. zz_addparty is by no means an optimal solution, but there are probably other people like myself who are willing to put up with some flaws in order to bring all their companions along during their travels. Eventually, if my schedule permits, I intend to write a mod that will overcome zz_addparty's limitations.