Could we please have a filter, especially for Map Compare, to filter by altitude. I appreciate that it will not be precise due to the way altitudes are calculated, but as most requirements are for challenge caches which use the same altitudes, this will not matter.
Perhaps something like two text entry boxes for low limit and high limit, using the units as set in the user's settings. Blank = default, no low filter and no high filter, which matches the same results as not having the filter enabled.
As challenges can verify altitude, the data must be available!