I think Kindl is simply nothing special. He's not notably good on either side of the ice. He shows occasional flashes of offensive brilliance, but he also shows spots of defensive ineptitude. He's large, but he doesn't use his size to his advantage.
I hope he'll develop further, but I'm not confident he'll do so.
Ericsson gets ragged on for poor play because he has the raw physical tools and (in flashes) the talent to be a bonified top 4 NHL defenseman. Kindl gets ragged on because he doesnt posses the skillset physically or technically as Ericsson and is smaller, a poor skater, less physical, and cant fight (something E gets no credit for despite being pretty decent at).
I'd like to see Kindl as part of a Jbo trade then sign a 7th dman off the scrap heap who has some size and grit to their game.