Hi,
Thanks for the idea.
With the javascript library we are using, I think it will be possible to make the display as some kind of tooltip on the button.
Otherwise, the "cart notify" plugin is one plugin which will display something when a product is added to the cart (or wishlist).
The goal of the JS API is to open the customization and allow developer to create their own plugin.
I really wanted to provide something else than the default "popup" when a product is added to the cart and to let the customization be really flexible (specially for templates).
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.