GMs might not be actively watching FH anymore, but I wouldn't bet a main character on it. If FH macros start popping up a lot like the Vxed ones seem to be a lot of servers see more activity in those areas, I wouldn't take the chance on a toon that I've invested lots of time in.
With that said, if you're not writing the macro yourself, make sure you start it and watch it for a long time when you do it the first couple times. Make sure you know what happens if you die, zone, etc, rather than assume the coder fixed all the bugs beforehand. When I was running a Vxed macro like a year+ ago I came home once to find out I had died and was now running straight into the wall in the Guild Lobby. Presumably before I got stuck I was probably trying to autocircle right there in front of everyone. I had to edit the code to camp me out if I died or zoned out of the instance.