This is the best way to play the original Angry Birds. This is the first Angry Birds game in which getting 3 stars in a level is consistently a challenge because of them (I think) changing the physics engine while not changing the points you need for 3 stars. This is not at all a bad thing as it is still possible to get all stars in every level and that change actually makes me feel as if I achieved something afterwards. Another positive change is that the game shows you the general direction of where the bird will go. Don't get me wrong I like the way the original handled it, but it is really outdated and this way of doing it is way more friendly to new players. It also doesn't show you the exact path but only gives you a hint of where the bird will go making it easier to come back to the game after a long time and making tighter shots.
The last thing they added is 3 worlds based on Angry Birds 2 (the movie), which are ok I guess, but nothing too impressive. They just changed the pigs sprites to eagles and added some new birds/pigs which are nothing too special. But I overall don't think that this was a bad inclusion as it doesn't take anything from the experience.