I want to retain both. My wife prefers unity and I prefer the classic. Many
systems are used by multiple people in the home, where each person has different
preferences. With that in mind Ubuntu should be able to be used in classic mode
with cube etc with out messing up Unity when another person wants to use the
same computer but with the standard unity interface. Otherwise my wife and I
will have to decide who gets the interface they want. Does she give up Unity so
I can have classic or do I give up classic so she can have Unity. (",)

Perhaps this is just a beta problem that will be fixed in the final version.
Right now though the analogy that comes to mind is you had a car that you could
only set the driver seat forward or back no matter who drives the car. This
would be fine with a car always driven by the same person. However both my wife
and I drive the same car. If the seat can only be set forward my wife would be
comfortable but I'd feel like I was stuffed into a can. Ubuntu is often used by
multiple people in the same home. There might even be times that I want to
switch between Unity and classic just for my own personal use.

Ubuntu is given for free so Canonical can do to Ubuntu what they choose but I
hope they don't lose some of they're loyal user base while making these choices.