I feel that in addition to filtering out those words, adding the string "//" to your list would be most beneficial to immersion in the ingame roleplay environment.
Edited to expand on my suggestion:
Everyone has real life emergencies, computers that start acting up, routers that occasionally drop connection. Informing other parties of these issues at the time has it's merits, being both needed in an attempt to cover oneself from sanctions, or plain good form to fix networking issues to improve interactions with others.
And this can be done by typing "Hey fellars, there's someone calling me" or "Be right back, my router is acting up". Both of these sentences can very well be in character. All ships in Sirius are networked, many have multiple crewmembers. The majority of real life issues can easily be integrated into the roleplaying environment.
However, using "//" in front of your messages cannot be. "//" ruins the immersion in the roleplaying environment. It is the same as delivering an elegantly worded message to your opponent, only to be greeted with a "LOL WUT U WANT??:)))". Filtering out "//" would still allow one to convey real life emergencies and out of roleplay issues, but without waving a flag saying "Stop what you're doing, this is only a computer game. You're not really in space, chatting with a naval officer, but are in fact sitting in front of a laptop, not wearing any pants"