The first is that the Elements have widely different levels of representation in the current Paldeck. For example, Dark types are very common while Electric types are very scarce. Along with this, many elemental combinations are not currently represented. This has been remedied by updating Pals' Elements to make sure all Elements are represented relatively equally, and every combination exists at least once in the game.
The second is that in vanilla, in order to counter a given Element, the player needs to use a Pal/Attack of one specific other Element. By making each Element strong against 2 others, players have more options on how to counter specific opponents.
As a bonus to gaining new Elements, some pals have also gained new work suitabilties.
Dark is no longer strong against Neutral. Neutral's only interaction is a resistance to itself.
Water > Dragon
Grass > Electric
Electric > Dark
Ice > Water
Dragon > Ground
Dark > Grass
Dark > Fire
Ground > Ice
Lamball - Neutral/Electric
Chikipi - Neutral/Grass
Rooby - Fire/Neutral
Jolthog Cryst - Ice/Electric
Hoocrates - Dark/Electric
Depresso - Dark/Water
Rushoar - Ground/Electric
Nox - Dark/Neutral
Killamari - Dark/Water
Celaray - Water/Electric
Mozzarina - Neutral/Water
Gobfin Ignis - Fire/Water
Hangyu Cryst - Ice/Ground
Cinnamoth - Grass/Fire
Dumud - Ground/Dragon
Leezpunk - Dark/Dragon
Leezpunk Ignis - Fire/Dragon
Elizabee - Grass/Electric
Grintale - Neutral/Ground
Swee - Ice/Ground
Sweepa - Ice/Ground
Rayhound - Electric/Ground
Kitsun - Fire/Ice
Dazzi - Electric/Water
Lunaris - Neutral/Electric
Surfent Terra - Ground/Water
Lovander - Neutral/Dragon
Flambelle - Fire/Ground
Vanwyrm - Fire/Dragon
Vanwyrm Cryst - Ice/Dragon
Ragnahawk - Fire/Electric
Verdash - Grass/Electric
Kelpsea Ignis - Fire/Water
Kingpaca - Neutral/Fire
Ice Kingpaca - Ice/Neutral
Mamorest - Grass/Ground
Mamorest Cryst - Ice/Ground
Wumpo Botan - Grass/Ice
Fenglope - Neutral/Water
Quivern - Dragon/Ice
Helzephyr - Dark/Electric
Suzaku - Fire/Dragon
Suzaku Aqua - Water/Dragon
Lyleen Noct - Dark/Grass
Frostallion Noct - Dark/Ice