I'm currently watching an Engineer Shepard playthrough of ME2 and ME3 on YT and it never ceases to amaze me just how boring a class can be made to look by Youtubers. It reminds me of back in the day when I first watched a playthrough of a Vanguard Shepard and it looked like a borefest, it actually put me off the class until I one day decided to try it out myself.
It was the same with the Engineer, I put off playing it because it looked as if it sucked until I made one a few days ago in ME2 and realised that no, it was the person I was watching who sucked and who was playing it wrong. Constantly hiding behind cover when the Engineer can easily be played as aggressively as a Vanguard, only popping their head out to shoot their guns, two very heavy guns, the Crusader and Collector rifle, which crippled their cooldowns. The person barely used their powers, it was ridiculous.
Seriously, it takes a special kind of skill to make a Vanguard and Engineer look boring. Everyone with this skill seems to congregate to YT.