  We present a new 3D resolved model for the initial state of ultrarelativistic
heavy-ion collisions, based on the $k_\perp$-factorized Color Glass Condensate
hybrid approach. The McDIPPER framework responds to the need for a
rapidity-resolved initial-state Monte Carlo event generator which can deposit
the relevant conserved charges (energy, charge and baryon densities) both in
the midrapidity and forward/backward regions of the collision. This
event-by-event generator computes the gluon and (anti-) quark phase-space
densities using the IP-Sat model, from where the relevant conserved charges can
be computed directly. In the present work we have included the leading order
contributions to the light flavor parton densities. As a feature, the model can
be systematically improved in the future by adding next-to-leading order
calculations (in the CGC hybrid framework), and extended to lower energies by
including sub-eikonal corrections the channels included. We present relevant
observables, such as the eccentricities and flow decorrelation, as tests of
this new approach.
