YOU NEED TO PUT THE HORSE SADDLES BACK IN FOR THE OFFICIAL RELEASE.
what IF YOU HAVE DUNGEONS,VILLAGES, AND FORTRESS TURNED OFF. NOT ONLY THAT YOU CANT GUARANTEE YOU WILL FIND ONE IN A CHEST. please turn that back on for the live release and future releases.
ALSO turn on infinite lava back on for SINGLE player. MANY PEOPLE ONLY PLAY SINGLE PLAYER. I HATE PVP.
1) Feature requests go on the Forums.
2) Dungeons still generate when structures are turned off.
3) Infinite Lava, as far as I know, was removed for both SSP and SMP in Official Release 1.0.0
3 Continued: Try using the Nether. Literally infinite Lava. There are reasons it's no longer infinite, but again, those belong on the Forums.