Status and Category Yes. Grouping the pilots and placing your pilots in the top 2 groups No.
Did either NWA or DAL group all of their pilots over the other? No. This is the failing of the proposed logic, not that they are integrated by Status (CA or FO) or Category (Crj900/Crj200/Q400/Sf340).
Even grouping people by category is kinda BS if you ask me. There are people junior to me on the jet in other bases. So, because I didn't want to commute, I may get punished in SLI? Not only that, I can't go lower than those guys because that is one of the hard fast rules. You can't jump seniority on your own list. Not only that, but I was seat locked for a round of jet upgrades because I took the first available Captain position. /sigh