At one point in time, after reading Chuck's book, I thought about it, but ultimately, for me, if I can't eat the animal, I don't really have any desire to kill it. So that removes all but the black bear and maybe an interior grizz that's feeding heavily on berries in the fall from the list. My main goal for all time now, is the 4 sheep species, I haven't even gotten to hunt one yet, but I love the country they call home, and of course the cost of those hunts is and will always be prohibitive.
Right now, the long term plan is to try and hunt at least one western species each fall until I'm 43 in 2027 and have my mortgage paid off. Once that mortgage is paid off, I'll have the disposable income that'll allow me to get after the sheep species. Ultimately, in addition to the one big game animal I have (whitetail), I'd eventually like to kill mule deer, roosevelt and rocky mountain elk, sitka and columbia blacktail, shiras alaskan and canadian moose, mountain caribou (maybe one of the other three as well), stone dall desert and bighorn sheep, mountain goat, black bear, interior grizzly, bison, cougar, pronghorn and maybe couse deer. That's 22 species, probably more than I'll ever get to hunt, but a guy can dream.