PVZ2 Excess Seed Packets

What will happen to the "excess" seed packets that you got if you already mastery maxed a particular plant?

For countless seasons of playing and base on my personal experience, that was a main issue for me (and for most players too) because whenever I got an extra seed packet of a mastery maxed plant, it only go to the void and unreasonably "wasted". The excess seed packets became useless for mastery maxed plants and I think it's time for you guys to do something about it.

My suggestion is that whenever a player will get an extra seed packet from events/shop for a mastery maxed plant, it will be converted to;

 ✓shard, or

✓dust, or

✓fragment

For a ratio of 1:1 (1 seed to 1 shard/dust/fragment) and this item can be used to purchase in a; 

✓shop, or 

✓Crazy Dave's "Discount Shop", or

✓Crazy Dave's "Black Market"

which consists of;

✓coins/gems

✓seed packets from unowned plants

✓seasonal plants

✓seasonal skins (expensive)

✓other items

Remember: Items mentioned above is purchasable by shard/dust/fragment from a converted excess seed packet.

Also, it would be better if you guys add an "inventory" for an easier viewing of player's collected resources like candies, gloves, Zen garden seeds, etc.

That's all. Thank you.