So far I have been quite lucky to play against a large variety of decks, both in store and on TTS.
I like the challenge of Vader Raider, Dooku Kylo, Luke Ackbar, Phasma Troopers, Padme Mill.
Decks that annoy me are those that seem to abuse the extra action mechanic, I am thinking Leia Ackbar (Its a trap), Han Rey, Jango Veers.
I hope that the designers limit the amount of ambush type effects as this can lead to situations where you watch your demise with no ability to interrupt it.
I played a gainst a Luke Rey deck the other day. It had 2 holdout blasters in for no other reason than to use as a ramp to activate and resolve Luke before mitigation.
I am not fully opposed to this mechanic but feel it needs to be very limited or else provide some form of interrupt.