I don't believe there's an official way to create a poll here on Steam, so I'll just open this Ask Me Anything type of post/event for you to express your thoughts on this.
Here are the achievements I'm planning to add:
20 000 000 Slaps
200 000 000 Slaps
CLINICALLY INSANE
This one will require the previous Wipe achievement "WHAT HAVE I DONE" to be unlocked. Similar to the other, it will be granted to you if you wipe your progress at 1 billion slaps (more on this below).
Slap on Halloween
A seasonal one for the remainder of the Halloween event. The idea with this one is that you'll be able to get it in the future even if you miss it this year. I could create more achievements for other seasonal events as well.
New planned upgrade: Slap Multiplier
This will make the new Slap achievements much more reasonable to get. With everything maxed out, reaching 1 billion slaps will take 14 hours. This is very attainable for those who let the game run frequently to get their crate drops.
Let me know how that sounds to you. Genuinely didn't expect some people to be annoyed by it. At the end of the day it would be easier for me not to add new achievements at all.