Actually each brand has four belts. Each has a champion, each has a second to champion, each has a tag-team, then there's the odd one. If they bring back too much belts, it will be the WWF re-incarnated. The reason why they don't have alot of belts is that then they don't have to show too many title defenses because I feel that alot of title defenses bore the crowd and such. I mean think about it, the WWF had 7 titles. It's good that they only have 4 now...4 for each brand. I mean if one brand brought back another title, it would start to get boring again (too many title defenses)
And yes I would classify the Women's title as major. I mean both brands have women (Raw: Gail Kim, Ivory, Jacqueline, Jazz, Lita, Miss Jackie, Molly Holly, Stacy Keibler, Trish Stratus, and Victoria. Terri used to wrestle, now she doesn't, and Lilian...w/e. Smackdown: Dawn Marie, Nidia, Sable, Shaniqua, and Torrie Wilson) and cruiserweights (Raw: Christian, Matt Hardy [not anymore], Chris Jericho [WCW days], Rob Van Dam [yes, he is a contender, the limit right now is 220 and he weighs just that], Spike Dudley, Steven Richards [yes, he also is a contender, the limit right now is 220 and he weighs just that], and The Hurricane. Smackdown: Akio, Billy Kidman, Chavo Guerrero, Chris Benoit [yes, he also is a contender, the limit right now is 220 and he weighs just that. WCW days as well], Eddie Guerrero [yes, he also is a contender, the limit right now is 220 and he weighs just that. WCW days as well], Funaki [even though he doesn't really wrestle right now], Jamie Noble, Kurt Angle [yes, he also is a contender, the limit right now is 220 and he weighs just that], Nunzio, Rey Mysterio, Scotty 2 Hotty, Shannon Moore, Spanky, Tajiri, Ultimo Dragon, and Zach Gowen)
I took a look back at some weight limits and it seems that for any lightweight/cruiserweight/whatever you have to be below 200 lbs or somewhere around there.