User:GhostInTheMachine/GraphicReplyLink.js

// replace the text reply link with a better-looking Speech balloon emoji and slightly reduce the height

$( ".ext-discussiontools-init-replylink-reply" ).text('💬');

$( ".ext-discussiontools-init-replylink-bracket" ).text('');

mw.util.addCSS('.ext-discussiontools-init-replylink-buttons { height: 1.2em; }');