No, no, wise one!
Missed the point, you have. It's not about makeing them like a PCP, it's all about makeing the most of what you've got.
Once the inherant problems of a spring gun have been addressed, mainly recoil and vibration, you've one! You're still quids in compared to a PCP and once it's sorted, that's it. Job done.
No matter how much you spend on a pre-charge, you're still stuck to a pump or an air cylinder each time you've fired a few pellets.
I know it's each to their own.
It'd be a very dull world if we all liked the same stuff!!
Cheers.
Andy.