As far as similarities. They already produced documentaries on each teams like riot does. But beyond that they also had nice features at this year's international: boohts,(?) at hero projections during the drafting phase, all star match with fans being able to play with pro players, concert. All these off the top of my head. There's literally nothing riot does better production-wise currently. And this isn't hyperbole. Anyone who watched the international and compare it to worlds can tell you that
Adding onto this, having attended two Internationals, you can really tell Valve has mastered running these things. TI5 had some hiccups with a DDoS going on for a bit, but they were able to get it smootly after about two hours.
TI6 was damn near flawless, as they were able to step it up above even TI5. They had entertainment bits in the downtime between games (no matter what peoples' opinions on SirActionSlacks are, it was entertaining and passed time between games without having the panel talk the whole time). For the last four years of TI, they have had Kaci Aitchison, a professional newscaster from the local Seattle Fox station doing player interviews, and lighthearted comedy bits. She is extremely professional in all of them, and it is amazing to see how she went to knowing almost nothing about Dota in TI3, but still handling everything professionally, to actually knowing some of Dota now and still able to up the professionalism.
There were the concerts mentioned, they had Lindsey Stirling as well as a live orchestra. There was even a special performance one night with a martial arts routine to announce a new hero.