Yes, this makes sense to me. How about this then:
"All staff members are encouraged to cast their votes in a clearly worded manner during decision-making processes within threads. When voting on any matter, staff members are expected to avoid ambiguous language. Instead, staff members should try to use straightforward language to express their position, in order to avoid ambiguity or misinterpretation."
Also, I recurrently tend to say "This seems to make sense to me", "I am leaning to agree/disagree" and similar as my form of voicing agreement, as I am not comfortable with speaking in terms of absolute certainty and truth, and, especially given my severe difficulties with keeping up with all forum work on top of all my other duties, I definitely do not want other members to continuously misinterpret that in any manner they choose in order to illegitimise my votes, and many other staff members likely have similar problems with serious time constraints when trying their best to help out with evaluations.