but the ability to Up or Down vote will be hidden as well as other stats except the author's name

I don't think the ability to vote should be hidden. Someone should be able to tell whether they have upvoted or downvoted a post, and be able to change their vote or add a new vote (likely downvote). For example, if someone gets a lot of upvotes and then deletes their post. I would be inclined to either remove my vote if I already upvoted, or add a downvote to it. I don't see why they should be paid for something that isn't adding any value to the platform. Getting rid of the voting options means people are less likely to see deleted posts that are pending a large payout.

The "Delete" will remove the post from all feeds (hot, created, trending, etc..) including the users own feeds (Blog, Posts, etc).

Fine, but if you later add pinning or starring posts/comments, I don't think those should be removed from the user's pinned list just because the author deleted their post/comment.

Deleting a comment without replies will remove the comment completely from the web view. No place holder will remain (even the author's name is removed).

I only agree with this if the post had no votes (in which case the new blockchain-based delete feature can be used to actually remove the comment object from the database). Otherwise, if it has votes, I think it is important to see the comment with placeholder text for the same reasons I mentioned above.