Hi,
We do not have any timeline for this feature ; it's in the TODO list with more than 80 other points.
My recommendation is more about letting your website accept to use mootools. HikaShop try to include mootools to make the vote works, if your website (template or plugin I don't know) refuse the lib inclusion, the vote won't work (and other features in HikaShop which requires mootools to work properly).
Even if we update the vote lib, mootools is still require by HikaShop ; the migration to stand-alone js / jquery is not completed yet and the vote lib is not the only one.
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.