Well, it seems like a good idea in theory, but I've seen an automated reputation system in one other game and it seemed to lead to people "farming" likes. As soon as you joined the game as a new player, some veteran tried to strike a deal to power level you if you "honored" him or whatever it was called. In PL there are already tons of people begging for gold and power leveling. I bet with this system they'll also be standing around begging for "likes", or selling favors or gold in exchange for likes.

As for sending the devs a detailed message about how the player helped you, that sounds great if the devs have the time to review it. My guess is they may be too busy to read through all the tickets they would get.