Well, I would say lets toss both of them out and go for wireless streaming? Like Apple's Airplay. I dont want to carry a cable with me, when I go to my friends house and want to watch a movie from my phone. If you force me to pick one, I will go with MHL as most TVs and monitors have HDMI input and not DP input. BTW I dont make decision decisions for consumer devices :)
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.