I totally agree simple is good. But the danger is making events too simple. Then people say it's not fun. The Human Endurance event was pretty simple, but then players complained that it was too much grind. Other feedback on previous events also mentioned that multiple goals in a single event will help motivate people to keep playing instead of stopping after reaching a single goal.

Not being able to track progress is something we are working on addressing. In the next patch, you will see the first step towards that. I won't spoil it but you'll be able to read what it is tomorrow when the patch notes go out.