On this post on Koreaboo.com, Top 5 idols that also produce and write music, Yonghwa was listed as no. 4.
I'm not discussing how they ranked the musicians (as I am not Korean and I don't understand all the things that for me seems unfair), but anyway, for me he will be forever my no 1.
Congrats Yonghwa! Keep going! Good luck in all you planned to do and have fun!