With all the alts around it probably won't give you an exact measurement, plus it could be used by "scouts" to verify TC numbers etc.
Even still, if it could be done it would be nice, or a step further to create a "squad" with squad chat and squad window (like the pic you showed) etc, possibly with having a radio in inventory as a requirement of inviting to squad, it would be harder to infiltrate with scouts and be a bit more interesting.
Still +1