Not quite, although in hindsight, that would’ve been the better way to go. Karax was my first one, and he’s the one I did in 1 week for all three. First 2 in 2.5 days each, and the 3rd in 2 days. However, this is greatly skewed for a variety of reasons…
1- Karax is one of my faves, so I’m willing to “put up” more for him
2- I haven’t played Sc2 Coop for about 10 months, so I was really psyched to get back into the game, period, let alone anything specific about it
3- that “adrenaline” really helps you get through things!
Instead, my order was starting with the ones that were my faves/interested me, and whose prestiges I understood. For example, I never bothered to read up on Fenix “dying makes champions better” effect, and his other ones (even though I fully leveled him up on P0.
Kerrigan, Artanis, and Raynor were quite awful (although again, this could be attributed they were part of “set 5” where each set, I pick 1 CO from a different race).