Hello! Here's a small datapack since I just got my last day at school and I am going on a vacation, yay!
This datapack doesn't do anything significant and hasn't been much developed, it's freshly new and an experimental one but I still wanted to hear what you have to say about it :).
Soon I may do it for other biomes but I am not entirely sure if I will have enough motivation and time for that.
Also, it may cause a little bit of a problem with lag since each tree spawns a lot of floating leaves that are going to despawn.
Otherwise, these forests are really easily accessible by horse and are really open now, they are pretty fun to explore because of this!
For that reason I also added a dimension with just this forest biome, it originally was made just for testing but you might want that too since it's looking really good all along.
Have a nice day!

To get to the dimension use:
/execute in minecraft:forest run tp @p ~ ~ ~Have fun!