Often there are times when I would like to reply to a post but don't have time or don't have a complete reply in mind at the moment.
If your reply could possibly be a lengthy one and you don't have time to post it completely, just type your partial thought into the reply box without hitting the "Post Reply" button. Your draft will be saved automatically in the reply box until the next time you visit the thread. Then you can just finish it and post it.
I would hesitate to say Like, but might just want to say Agree, GP(good post), GFFT(good food for thought). In a drop down menu other choices could be Disagree, MDP(more details please), CQ(confusing question),
GI(Google it), DU(don't understand your question), TI(thanks for the idea) etc.
The positive affirmations you mentioned like Agree, GP, GFFT, and TI are all synonymous with "Like", so I can't really see any real basis for sharding like into various sub-words.
In regards to the terms like MDP, CQ, and DU, there needs to be an explanation as to why you feel that way, not just a dropdown box to click and run. Sure, you might disagree with a question, or be confused in some way, or need more details...... but why? Why do you disagree? What specifically are you confused about? What details were lacking? The person you are replying to can't be expected to read your mind in these areas. You have to be clear and explain yourself.
One of the reasons why I love forums so much over the quick-and-easy formats like chat rooms, SMS, instant messaging, etc. is that you can explain your thoughts in detail instead of relying on a bunch of acronyms like WTF?, LOL, +1, or emojis to communicate.
In regards to "Google it", I honestly can't stand when people post that because it doesn't add value to the thread. After that's been posted as a reply, then every single person who reads the thread also has to "Google it" just to find out the answer. So I'm of the opinion that a poster should contribute something of value, or don't post at all.