Obviously California is out of reach, but even improving among Hispanics a couple points would shore up Georgia and Arizona while helping out in Colorado, Nevada, North Carolina, Florida, etc. So, in terms of strategy, Jeb is 100% right, the GOP needs more hispanic voters.
Agree that appealing more to Latinos is important for the GOP and helps them with many of the states in the 2012 battlegrounds that Romney targeted. I just don't see how it expands beyond that list (besides the aforementioned possible return to New Mexico). To really 'expand the map' the GOP needs to look to
all elements of the so-called 'Rising American Electorate' (unmarried women, African Americans, Latinos, other people of color and millennials). If they can do that, then maybe some more states come into play like Minnesota, Michigan, Oregon. And of course Wisconsin and Pennsylvania (which were on the 2012 list) become more realistic targets.
