Dropping all spellcasting would make you Tier 3 at best.
Dropping wildshape? I'd say still Tier 1.
If you only changed it to have spells per day and spells known as a sorcerer (and spontanious) I think that could drop 8t to tier 2. If it were a specific, specialized list of spells known (much like healer, warmage, beguiler, dread necromancer), that could be tier 2 - 4 depending on what spells were on the list. But it may be difficult to drag it down to Tier 4 b/c of the wildshape and pet.
Personally, I would ask to drop spells and animal companion to add soul binding, so I could have a wildshaping binderesque character.