I picked up the greatest hits PS3 edition and I thought it was a really fun game outside of the irritant of horse travel which goes away very soon into the game (you can teleport instantly home/to cities after a couple assassinations). Other than that I really enjoyed saving all the citizens, getting the view points, etc. The flag collecting is retarded so I didn't do that however.
You can make this game fun by doing this one thing:
never use the sword after you get your shortblade back.
Sword is easymode and really boring. Try limiting yourself to the hidden blade or short blade in all fights and watch it be about 10 times more interesting.
"The world is populated in the main by people who should not exist." - George Bernard Shaw