@Natasha_Jay
Transodon is funny. sounds like something in a folk park or a sf-trans-story
Transverse on the othe hand cold be an onlinline-shopping platform.
The more often I hear or read the word "trans" the more I begin to hate it. The word is going to change its meaning over time!

I like T-Girl, but this would exclude all others who are not girls.

In the lack of a better idea
I would suggest
#Transhangout
#TG-chat
or my best idea just
#transcommunity

I hope we get better ideas!