If the Morag Tong and the Dark Brotherhood are not
in Skyrim are there any other assassin guilds that
would fit the bill?

i think thats it man unless the guy from the bourne identity is in the game

No, and the DB is in the game.

I hope Morag tong are in.

I don't know, but I hope that there are more assassins’ guild quests. I felt that the dark brotherhood storyline was waay too short in Oblivion. You commit your first murder and next thing you know, you’re doing dead drops all over the province.

Maybe they could even have random quests where the game generates an NPC that you have to kill for x amount of gold? They could have these random Contracts listed on the wall of the guild.

Actually, they could have this Bounty hunter idea set up in Taverns, not just assassin's guilds. It would be cool to have a random quest to hunt down some Bandits or something of the sort, IMO. It would give us something to do after we finish most of the quests in the game.

http://badasspanda.com/more-skyrim-details-from-the-interwebs/2886
http://nerdreactor.com/2011/02/07/new-surprising-elder-scrolls-v-skyrim-details-assassins-guild/
THe dark brotherhood is in here are the links

the assassin's creed... just sayin'

To be honest that last bit got quite old quite quickly in Red Dead Redemption, but can't blame you for thinking outloud. I think we just need more crooked and darker objectives, like come on, you're in a guild dedicated to murder, give us something juicy and a little risque.

could be the best combo ever ..assasins creed and TES.. the ultra best would be halo reach and TES but i have a feeling they wouldnt mesh to well

Morrowind was the only place where the Morag Tong had any real power, and that particular place went kaboom. I highly doubt we'll be seeing them in Skyrim.

This is Zedekaispartan, and I approve this message...

Although the Halo scrolls (youtube) would be better as a separate game IMO

Morag Tong as rivals of DB