ideally replace stone its likely contaminated with dirt from below and
stone provdes drainage.

go figure here they are paving driveways over mud of course they fail
fast so the do them again. some have grass growing in them after just a
few years.

saves digging, gravel, and rolling its cheap but not recommended.

like repaving your driveway sure they can top coat it but dont expect a
long life.

dig out well correct drainage issues, 3 or 4 inches of large gravel, a
inch of choke fine so asphalt doesnt migrate too much into gravel, 2
inches of rough and a inch of fine each layer rolled before the next
goes down.

had a friend cheap out he redid his driveway 3 times in 8 years.

original driveway damaged by heavy truck, against the advice of his
paving company re had it resurfaced after they said it would crack at
damage and it did

so he had it ripped up with low bid didnt replace gravel bed, it
lookedv ok but failed withing a couple years. he noted damage where mud
was in gravel... poor drainage.

so he finally had the whole thing ripped up and removed, with all new
gravel etc. that was over 10 years ago he seals it every 2 years its
still fine.