Internal WiFi would certainly be doable as part of a biomod - but it would have to have a downside, too - and the further you could reliably communicate with it (the better the signal, the less lag, etc, etc, etc), the more downside it should have. "Great! I can leave my walkie-talkie at home!" is pretty cheap. Near-instant coms across a small stretch of the trackless void transmitting detailed pictures of the local battlespace for tactical coordination? That's a bit more expensive. Near-instant comms across more than an AU, with full realtime sensory transmit? That'll cost you an arm and a leg. Literally, if you wanted to take it that way.
As a rule of thumb, if it can be duplicated (or close) with current, inexpensive, off-the-shelf hardtech, it's minor, and should be treated as such. If it's more than that - well, it depends on how much more.
Mind you, the fact that someone with the appropriate rig could hook into and hack their mind without their consent *would* count as something of a downside, if you wanted to go that route. Other than that, just remember that biomods should always be at least a little random, and preferably more than a little. Having onboard wifi (with advantages and disadvantages) always show up somehow or other as a result of a ship quirk is fine, but you'ld want it to hit different characters in different ways - and not necessarily just to their liking. Certainly not to their intent.
As a rule of thumb, if it can be duplicated (or close) with current, inexpensive, off-the-shelf hardtech, it's minor, and should be treated as such. If it's more than that - well, it depends on how much more.
Mind you, the fact that someone with the appropriate rig could hook into and hack their mind without their consent *would* count as something of a downside, if you wanted to go that route. Other than that, just remember that biomods should always be at least a little random, and preferably more than a little. Having onboard wifi (with advantages and disadvantages) always show up somehow or other as a result of a ship quirk is fine, but you'ld want it to hit different characters in different ways - and not necessarily just to their liking. Certainly not to their intent.