Yoseman,
The trip from Charlotte Lk over Gardiner Pass, through the seldom travelled Gardiner Basin and out 60 Lks Basin is well worth it. The summit traverse on Mt Gardiner is very memorable.
Also the Lakes Basin is beautiful and access over Cartridge Pass, besides the history of it being the original JMT route, provides easy access to Mt. Ruskin, a seldom talked about but wonderful climb from the pass. There are many ways to leave Lakes Basin but Frozen Lake Pass to the JMT to Palisade Lks then into the lakes basin under the west side of the Palisades and out Bishop Pass, climbing North Palisade on the way is a great way to end.
Also, in between those two areas the routes up the White Fork (amazing rock color in the creek) or the Window Pk Lk drainage and a climb of Pyramid Pk are good choices both exiting via xc passes to Bench Lk.
Have a great trip.