any frame dissolves yet in TBH14?!

i see old threads about this and i don’t see anything recent:
i’d really love to be able to do animation on 4’s and 6’s or more, and do dissolves between them, some sort of frame blending.
my work-around is royal pain: splitting alternate frames onto 2 layers and using transparency nodes to fade each one up and down; essentially impractical on a schedule unless it’s a really brief shot, but wow, it’s like carving angles on a pin…
this seems like such an important feature for animation in general; analogue or digital; does it exist here yet?!
i’ve attached a screenshot of tv paint’s method; just like film dissolves of illustrations in animation of yore.