This has been a small annoyance for a few years now. I Googled to see if anyone has asked it before but I could only find one match on some third party website and there were no answers, hehe. It def would be nice to have.
Yes, it's about time that Liquify caught up to the rest of Ps. More than likely it'll still be a few years though, since Adobe likes to wait a few decades after releasing a tool to finally update it.