I'm glad you've enjoyed the game, and I appreciate your support!
Those 3 animations are disabled for that release. That said, you can use a the cheat code to enable them back.
Cheat codes are unlocked when you solve the secret of each stage. To get a hint for what the secret is you have to win the boss level of each stage and the score screen will give you a hint of how to find the secret of that particular stage.
Every version of PPG accepts the cheat codes. In order to use them you have to type them in while the game is on the title screen (with the main menu displaying). Just type them in directly on the keyboard and if you type a code correctly a sound will play.
For a full list of cheat codes please refer to the bottom of this page:
https://megablueball.blogspot.com/p/pixie-panic-garden.html
The particular code that you're looking for to unlock those 3 animations is "okbeast".
As for the release of MKM it is a bit too soon to give a proper answer, but I'm aiming for a late 2020 release or at the very least early 2021.
Best Regards.
Laek