I recommend adding support for links that websites use to add token listings to Metamask.
Here’s an example:
Go to Jade Protocol website (https://jadeprotocol.io/#/stake).
Hover over the “Buy JADE” button in the upper right corner.
Click on JADE or sJADE button.
This should add the token listing in the wallet (and maybe open a tab to the wallet to show that it’s added). Currently nothing happens.