No economy is ruined for ever, all economies adjust, that is the nature of an economy.

Making the materia system like FFVII, where it is luck-free and based on choosing a strategy of what you want equipped would be wonderful.

I think it's been mentioned in many threads (and agreed upon by me in all of them): Yes, please. Just take the materia system from FFVII, and use it here.

Drop the whole random destruction of items.
Drop the 'optimization based on gil and time sink' in favour of 'optimization based on strategy'

Thank you.