The "wave" social has been improved and broken apart.

Now you have
wave
wavehi
wavebye

That way you don't wave at someone intending greeting, and end up with that echo of you waving goodbye at them.

It opens up fun options like:

Fleasplease lifts a practice dagger into the air and waves hello at Dothewave with it.
Personlady lifts her hand and waves farewell.
Personlady lifts a long serrated knife into the air and waves goodbye at Fleasplease with it.

wavebye
You wave goodbye.

wavehi
You raise your arm and wave in greeting.

All credit to the above goes to Azorinne. Enjoy!