You never know what trade-offs are involved -- with the Leonardo, which is almost identical to the Uno, they basically added 2 extra pins -- in the case of the Mega and Due, then had a lot of difital pins ~50 and fewer analog pins ~16 -- so them moved the I2C from the analog pins across the board to some of the new digital pins.
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.