apt's lack of multilib is a PITA, but you must also consider that
apt's development community has only one member coming from the
multilib world, the masochist sharing Panu's mail address ... ;)
...and even I'm not really from "multilib world" since I don't have x86_64
boxes at home. My next system is going to be that but whether it happens
this year, next year or the one after that I dunno :)
OK, then apt has no developer that could look after multilib
support. No wonder that it is still not there (and will probably never
make it). It's a catch22 (FC does not support apt, because apt has no
multilib, and apt has no multilib, because FC has no (multilib)
developers assigned to it :)