Yes, ac was spammable but other skills of mechanics literally suck. Boost knuckle and ice launcher are the next two useful offensive skills; however, significantly weaker than AC. Mado mech's other offensive skills either have low damage (vulcan arm, flame launcher) or sucks due to long CD (SD) or both (pile bunker). Mado mechs just don't have enough variation. Compared with AS, which is an easy 50-70 k at low-levels with low-mid tier gears, AC is good at 20-30 k at low-levels and low-mid tier gears. Users must be very rich in-game to unleash the full potential of AC, that's why it sucks since the new weapon for AC just adds 15% to its damage, and maybe a maximum of 45% (+18). Unless they can make vulcan arm replace normal attacks (bind with normal attack). For such a high caliber weapon, it only adds a few damage to AC. Compared with other weapons, the primary offensive skills of other jobs were powered-up, whereas for mado mechs, meh. No love from RO Mado mech is a dying breed