Erecting barriers can be a loaded term, with connotations of limiting or preventing access or movement. There are several alternative phrases that can convey a similar meaning in a more neutral or positive way. One option is to use "establishing boundaries," which implies a clear demarcation of a space or idea without necessarily restricting access or freedom. Another phrase is "constructing safeguards," which conveys a sense of protection or security rather than isolation or exclusivity. "Developing protocols" is another option, emphasizing a structured and systematic approach to managing a situation without necessarily limiting options.