You can. These guys did it
Also, the image comes from here : https://www.researchgate.net/publication/220053910_An_Improvement_of_the_Performance_of_Multiple-Aperture_SAR_Interferometry_MAI
The idea is to do subaperture processing of L0 product to generate a backward and a forward SLC image. It degrades a bit the resolution since you reduce the Doppler Bandwidth
Maybe @lveci can tell us if this process may be implemented in the future ?