If VA mk2 emerges as a 1-class hybrid or a pure LCC, I can't see SQ being all that interested in maintaining a partnership with the VA1 successor.
J pax on SQ connecting onto 'Y' class on a Hybrid 1-class or a pure LCC wouldn't leave a good impression on what's left of SQ's J client base post-COVID.
If it was a domestic full service (with limited NZ/Pacific Islands or no international service), then there's a reasonable chance of SQ forming a codeshare/FF relationship with VA mk 2 at the most.
J pax on SQ connecting onto 'Y' class on a Hybrid 1-class or a pure LCC wouldn't leave a good impression on what's left of SQ's J client base post-COVID.
If it was a domestic full service (with limited NZ/Pacific Islands or no international service), then there's a reasonable chance of SQ forming a codeshare/FF relationship with VA mk 2 at the most.