It's unfortunate that it is implemented this way since changing it will
take time. This option should *really* be like OPT_CHOICE but with
doubles and not integers. We don't have that though and implementing it
is something for the future. Even if that was done today, this still
couldn't be switched to since setting -1 has been the effective way for
years to undo video-aspect stuff. So the approach is to just add another
special keyword for this and tell people to use that instead. Note that
setting 0 isn't deprecated since M_RANGE(0, 10) is totally fine and
would work in the future if this option type ever gets redone.
These were still set to float. For some common aspect ratios (e.g. like
4:3), the loss of precision is significant. The underlying calculations
are already done with doubles so all that needs to be done is to change
the type of the sub-property.
Dudemanguy