Many cards on the development Trello have no descriptions at all. This makes is hard to know what you are voting for. I suggest writing a short description of each feature.
This is true and I would have to agree 
Yeah, but most trello cards are quite self-explanatory through their trello card names though. Generally speaking, the whole Trello Roadmap is an amazing tool. Loving the transparency Epic has here!
That depends a lot on your level of experience with engines and game development.