I can certainly appreciate the complexities of DWG loading through Studio, DETE, and so on. Forcing users to publish DWG's through Map to achieve certain results previously available through Studio does seem like a backward step IMHO.
I will give kudos to the FDO operators and functions and intellisense-like interface being available in the expression builder, but it is free-form only, and when creating something like a tooltip with a bunch of nested concats, it gets really ugly really fast. That's where the old, friendly "Builder" mode was really handy: you could use that mode and then fine-tune it in "Advanced" mode. Now, it's ONLY advanced mode......
Try creating this expression in Studio 2009. I just did it and it was not fun.
concat('
', concat('\nParcel ID: ', concat("PID", concat('\nOwner Name: ', concat(NullValue ( "OWNER_NAME", [text property] ) , concat('\nAddress: ', "SITE_ADDRE"))))))))