Well Since were quoting Yoshi, how about acknowledging the Part of that letter where it said "The Future of Ranking Up." Just maybe Yoshi acknowleged during the creation of the patch an error was made in the amount of EXP given from leves and mobs, and didn't want to risk delaying the patch for another extended period to make such ajustments, as the main purpose of the patch was to only emplement Grand Companies and Auto-Attack (as far as I'm concerned everything else was just a bonus).

Maybe Yoshi acknowledged the "nerf" and tried to explain that this won't be a permanent thing, as he also makes refrences to further adjusments to Leves, Partying, (and for all you complainers and melo-dramatics out there) THE BATTLE SYSTEM in patch 1.19 as he mentions in the formentioned Letter. (also keep in mind that, that letter came out the day before Patch and when he says "The Future of Ranking Up" he didn't directly say that the non nerfing was gonna take place in 1.18)

This is a whole new system and a whole lot of new content and I'm suprised so many people thought it as going to be Picture Perfect. Keep some enthusiasm and remain optimistic people, this is only the beginning!