I feel dk wants to play it safe and delay longer in laning phase rather than teaming up fights. Maybe because they know that each of them have better individual skills in terms of farming and laning.

However, teams now starting to team up early and fight. Hopeful for dk to just go all in, or nothing. No point playing safe just because it's for TI. play beautifully and I hope dk will win this

tinker is actually a very situational pick. Picking him means less farm for supports and carries while having a deadly hero (combining dagon and ethereal blade). No doubt that tinker suits the current meta where gold comes by easier than before. With just some stacking on the nc and ancients, he do get big easily. Being said, rat doto is easily countered while team fights are usually neglected. Tinker is the mixture of both where he can rat while having good combat teamfight.

This is why pro teams start noticing the power of tinker for the current meta. Well, what makes me curious is that X!! doesn't play it in TI rather than mushi playing it. Kinda disappoints me because his tinker used to wow me even when that current meta doesn't really suit him.