Yup.
I thought Jaisun was also talking about playing with his comment of...
...otherwise, as griffin said:
I reckon if you care about resale value, don't open your toys. If you don't play with your toys, then what does it matter? If you do play with your toys and you're concerned about preserving this gimmick well into the future, then get variants or doubles - one to play, one to preserve - and you can display one in robot mode with launchers loaded, and the spare displayed in vehicle mode with launchers unloaded in storage. I play with my toys, but I'm not that concerned about preserving the launchers. If they wear out, they wear out.