I highly doubt if Krita has the man power to do this. They've been developing a new text system for more than one year. The new text system isn't designed to be compatible with Photoshop.
And even if it is, rendering text just like Photoshop is just a tiny step towards rendering everything like Photoshop.
And even if it is, rendering text just like Photoshop is just a tiny step towards rendering everything like Photoshop.