Given that the main Biotic Detonator for armoured targets, (i.e, dangerous targets to walk up to) is Shockwave, and that Adepts are glass cannons by nature, I cannot possibly endorse the Human Adept. If others choose to play as them on Gold prove a point, by all means go ahead but that does not validate the HA as a good class; rather, I would argue that it highlights the player's skill over the class's benefits.
I dislike most of the Engineers. I find Combat Drones and Turrets too weak and Decoys too situational. I also prefer Biotic Detonations over Tech Bursts for their staggering ability, which make Adepts my preferred caster class. Overload/Energy Drain are the only Engineer powers that I truly admire.
As for Soldiers, I like mine to have a certain flair, or style about them. Turians have their walking bullet-hail qualities with Marksman, and Krogans, Batarians, and Vorcha are very fun, melee heavy close-quarters specialists. In comparison, Human Soldiers are plain boring.
