I'm with Mr. Death,
Please please no parametric/history stuff. Other CAD programs handle that very well and engineering teams can have fun with that all day. MOI is the ONLY CAD/Design software that I can use without ever thinking about where a particular utility is nested, the only CAD program i can put away for 3 months and get right back into it without reorienting myself, and the most intuitive interface ever. MOI never gets in my way. Carry on.