I picked Hawkeye as my starter and found him pretty boring too. Just kinda stiff with some dull attacks.
Bought Hulk straight away and had a lot more fun. Also have Daredevil (you get a second starter hero after completing the prologue bits) and Thing (which I got for completing the story first time) and they're both also more interesting. Thing is a lot like Hulk, but without as much AoE carnage and a lot more group utility and defensive power. I got a Thing token to drop right after I unlocked him, too; I'd give it to you to try but I guess they are account bound. Seems you can only use duplicate tokens to upgrade that character's ultimate skill.
There'a few videos now on
my Twitch channel of some Hulk action if you want to see what he looks like. When I stream tomorrow I might buy another hero to level up, leaning towards Punisher at the moment, if you have any interest in him and want to see how he works.