Hitting a macro to show how much TP you have is not "communicating." All TParty did was removed a bunch of senseless spam.
Just as much as pressing the stun macro when fighting Cerb is. You inform your team that you've used the spell, and it's next guy's turn to use his when needed.
With the macro you inform the groups other SCer that you're going to go as well as the BLM that he can start preparing the MB. If that's not communicating, idk what is.
If I'm supposed to do a skillchain I still expect to get TP reports and I still give TP reports. Alt-8 has, and always will be, my TP report button. None of this changed when I started using TParty. You still let others know.
The difference is that before it I would
spam my tp every time I hit so they knew exactly where I was. TParty also allows me to see when another party or alliance member has TP so I can hold off for 5 seconds to ninja a skillchain when there are no plans for one.
That being said, I'm really hoping that we get a working IME for all clients, what TParty gave us, the ability to actually control our clipping plane, a thing that tells us how far we are from the enemy, etc. Or at least give us the ability to make them ourselves and use them.