I use Love, HaHa, and Wow quite a bit. A lot of the stuff I hit Like on, I might use other options if they were available, but the limited selection makes Like sort of a default acknowledgement reaction. Something like or I might use if it were an option.
I would also be all for TF-specific emojis like the old ones.
it's a moot point if the original emoticon images are lost, but if by chance they do get found, you should be able to add them as custom emoji here (i use another forum that also uses xenforo and they have all their pre-xenforo emoticons added as 'emoji') and enable them to be used as emoticons once again