A feature that some Lemmy apps have (including Mlem and Arctic) are swipe options that allow up to four actions to be taken via short and long horizontal swipes.
As illustrated in the Arctic and Mlem screenshots below, the typical actions are upvote and downvote for the short and long left swipes, and reply and save for the short and long right swipes. Ideally, users would have the option to remap actions to these swipe options, along with having the option to disable them individually; alternative actions users could choose to remap include Block User, Block Community, Hide Post, Share, Crosspost, and Report Post, among others.
In contrast to hard-to-tap buttons, I think swipe actions would make interacting with posts on Blorp easier.
Short Left Swipe
Long Left Swipe
Short Right Swipe
Long Right Swipe
The four main ones are the most important: upvote, downvote, reply, and save. Of those, upvote and downvote would be used most often.
While swipes would be the fastest gesture, perhaps another gesture that could be used to complement it is the long press (though it may be too similar to double tap).
Long press menu in Mlem: