Hey there!
I can see this was definitely a controversial discussion and we have brought it up with the rest of the Poltergeist team to discuss. We (and the leadership team) have taken into account all of the opinions and comments and we have decided to decline this suggestion. We understand the frustrations that some players have with parkour, but Wizards PE is not something we are looking to remove. Every class (including WizPE) is optional and players are not forced nor required to attend these.
Since Wizards PE was re-introduced, it has gained a large following and there would be many players who would be disappointed if it were to be removed. If there are players that do not enjoy this class then they simply do not have to attend it as there are many others to go to. Thank you for your suggestion and we hope you understand why we have come to this decision. Hope you have a wonderful day!