https://youtu.be/VlEFdxfihtU
Points covered in the video are:- 1)We should be allowed to use 4* and 5* in the 5* basic arena to get more 5s Just like we can use 3s and 4s to get more 4s in the 4* basic arena. 2) the milestones should be somewhat similar to the milestones in the featured 4* arena 3) the major change in the milestone rewards should be replacing the premium hero shards with the grand master crystal shards. 4) the 3-4 star arena boost should be replaced by 4-5 star arena boosts
See the video for other points and let me know if you disagree with me (mention the reason as well) and we can have a constructive discussion about that.