Hi,
I have been trying out multiple WYSIWYG editor and i think the ipb one is lacking alot!!
First as sometime when you have so many different styles for the words the text goes oversize when you submit, There should be an option where you can view the BBCODE view.

Second you need to put the increase and decrease textarea size on the top and not on the bottom as, it is quite annoying when you need to scroll down again to click increase.

third there should have a button to fix the bbcode or html

forth you need to intergrate spell check, i know matt worked on some ipspellcheck a few years, i think he mentioned it on a blog or on a post, i can't remember.

Well that is it for the text editor.

http://forums.invisionpower.com/index.php?act=UserCP&CODE=04. Last option on page.

http://forums.invisionpower.com/index.php?act=UserCP&CODE=04

. Last option on page.

i said the ipb's one is lacking a lot of features