You've owned a toy for 9 years that you've never transformed?

The little tabs are fragile, I did end up snapping off one of those, and the shoulder panels are prone to falling off (but are easy to put back on). But the transformation is a combination of being heinously difficult/complex and counter-intuitive which leads to it being more frustrating than fun to transform. Other toys like Big Convoy, BT/ALT Grimlock/Wheeljack and RotF Leader Optimus Prime tend to suffer from this. Toys like MP Ironhide/Ratchet are complex toy, but they're intuitive and fun to transform. All the post-MP10 MPs are generally fun and intuitive, which has possibly contributed to the rise in popularity in this line (which translates to TakaraTOMY producing more figures to satiate consumer demand).