A good phone-attaching case for ThinOptics reading glasses

ThinOptics are these small reading glasses that conveniently slide into a slim case that attaches on the back of your phone. They're such a useful invention and pretty popular in the US and in India (sold by Lenskart). 

However, their case just sucks. I heard this from two people in-person and online reviews on Amazon agree with this. There are 3 main issues with it:

1. The case is hard and scratches the plastic glasses very easily. Maybe if there was a soft fabric inside (velvet or microfiber perhaps) this wouldn't happen.
2. After some use, the glasses just slide out of the phone case. Better design needed to lock it in.
3. If you put the case on your phone (as it is designed to be), it blocks the wireless charging port at the back of your phone (so you can't use it). 

If someone redesigns and manufactures a case that avoids these simple issues, I'll be your first customer. You can list it on amazon and there's essentially no competition. Easy money for whoever wants to do it.