Developers likely removed the trading system to make it easier for new players to progress
The cards themselves have some pretty stunning art, with many of the racing vehicles receiving full-card borderless treatments that crackle with energy, with cards like Veloheart Bike, Gastal Thrillroller and Thopter Fabricator showing both ride and rider with some pretty awesome art
Yes, you have to exile another blue card from your hand, but blue is also the color that gets the most card advantage, so its a relatively small cost
Forest Seal Stone SIT allows you to search out any cards you want, you can Lost Vacuum CRZ a card from your hand, remove Forest Seal Stone from play too, and really rush out some crazy attacks
Wheel of Fortune has the advantage of filling your graveyard and enabling discard payoffs, while Timetwister nerfs graveyards
This has a huge number of applications across a range of formats, as it opens up angles of interaction the games designers may not have intended