[j-nsp] EVPN all-active vs. layer 3

[Rob Foehl]

Given a pair of EX uplinked to a pair of MX, with various downstream CE 
that may be single devices or their own layer 2 topologies, as in this 
terrible diagram:

   MX1 - MX2
   |  / \  |
   EX1   EX2
      \ /
      CEs

...and a need to deliver various EVPN services to access ports on the EX, 
which currently run a bunch of layer 3 toward the CE devices (sometimes 
including VRRP across the CEs, or eBGP to them, or both):

Are there any "good" options for running all-active toward the EX while 
also moving existing layer 3 up to the MX, or am I stuck with 
single-active and carving out IFLs for each use case?

-Rob