I, as well, was advised early on in this game to develop my shooter class. I don’t regret it but I have noticed that carriers might of been an easier path. I decided after a couple months into the game to create another account and invest in the carrier class. Maybe it was just me but I found the carrier class to be easier to advance quicker, especially for f2p players.
So being as I use both types on 2 different accounts I think I still prefer shooters but that’s because I’m more developed in that soldier ant type.