yes, i agree with OP this cooler hose atf change is probably the easiest, and efficient. the hose size is 3/8", you can disconnect it from the a few point. I use the same method, and add a few feet of atf hose to have a external filter next to the airbox, i disconnect the external filter connector and collect used atf there. the 2nd mdx, there are a few points you can disconnect to collect used fluid, but i found exit of AT, entry of AT to be easiest.
the OP's 2008 may be out of warranty, 2007-2009 MDX was filled with ATF-Z1 at factory, and I think either Maxlife ATF or Castrol Import ATF are an superior fluid to ATF-Z1.