I think you may mean “Planks”, uBurst is a mini Clouds.
A thought if you wanted to have Frames in there is that you could swap out a Planar and Quad VCA for Frames and a uVCA II (or similar) and have 2hp left over for a mult or whatever. For a lot of the ways someone could use a Planar you could use the Frames instead, but it all comes down to preference (of course).
On one hand you have two dimensional direct control with Planar, on the other you have one dimensional control of four parameters in multiple directions with multiple interpolation options with Frames. Both can be used as VCAs of sorts, so there is some overlap, but just a different approach which for me would encourage very different uses, including using one of the Planar axes to control Frames, or using the ‘sense’ or manual gate from Planar (or Walk, for that matter) to step through Frames in sequencer mode, using it as a kind of preset changer.
Not trying to convince you, just offering a different perspective