it-workplace have released an mdx query building tool:
http://www.it-workplace.co.uk/IOCOverview.aspx
Being built on adomd.net it won't work with TM1 but i think it shows the increasing demand for mdx tools in the market place.
I built a tool for showing the mdx equivilant statement for tm1 views in my open source toolkit found here:
http://forums.applix.com/forum/tm.asp?m=10617
or
http://www.bihints.com/tm1_sdk
and I was wondering if people found these mdx tools useful and whether further tools would benefit people.