To me, it is kind of user-unfriendly; giving it just [simg][/simg] to the text field without extra clues gave me trouble in the past, and I assume new users might face the same issue as well. How about making it give [code][simg w=(width) h=(height)][/simg][/code] upon clicking the button, instead? This would definitely be of assistance. It could encourage people to use this BBCode more often, and maybe there will be less issues with big-sized images in the future (and never forget the little time it saves up!).

If an admin (probably one not named VinnyVideo) wants to tinker with the BBCode, be my guest. However, phpBB 3.0.12 is basically obsolete, and we're now concentrating our development efforts on a new MyBB forum that's compatible with modern plugins so we can add new features and allow MFGG to move forward.