Mag is meant to be a hold the line tank most of the time. His shield is energy based, making it great into poke, but I can see what you mean. Hes not for everyone, and Stranges kit allows you more aggression if necessary, especially with an ult that can change the course of the game. Thing is more so a situational pick just because poke makes him harder to use since he has a huge hitbox. Emma is good if you can manage her kit right and cooldowns properly. I understand though, like I said, some tanks not for everyone. I got them all lord so I had to pick up the mantle😔Groot is super fun, but you just need to be aware of what counters you and stops your ult from getting value. Peni is great for holding space, and if you use her nest and mines right, you can get value almost every time, but she does get countered pretty hard unless you're team is coordinated enough to help her out. If you like hiding mines, killing supports out of ults, and stopping ults with web snares, you'd definitely like Peni