i'll admit I don't have OFB and wasn't necessarily planning on getting it as I don't want to go through all the hacks to make sure they are compatible.
To use the one more slot packages on MTS you have to use objects or the
Invisible Magisplay tray from MTS at
http://www.modthesims2.com/showthread.php?t=181208&c=1Since its a recolor of an OFB object it won't be available to those with nighlife as myself. The key capabilities of the tray seem to be:
1) It's invisible (he changed "stdMatAlphaTestEnbled" to 0 or 1 in material definition on the recolor ).
2. It allows Sims to placed on top of it. One more slot pkg's work fine w/o the tray but won't hold sims. Therefore cool poses can't be done by placing sims on top of furniture. The tray's object properties allow sims to be placed on top. What properties of the object that allow that I do not know.
3. The tray can be placed on top of furniture.
4. It's thin and small in size. Now since there's plenty of custom meshed objects I don't see why you'd have to go with an OFB recolor to get the same effect. Any object that works the same or that can be designed to have the same effect? If not what properties would need to be changed to allow this (in Simpe I'm assuming)?