Base classes that act as specialist Wizards?

[ShneekeyTheLost]

What do you mean by Trapspringing?

A Beguiler tends to focus on being the 'party face', getting skills like Bluff, Intimidate, and Diplomacy.

My Transmuter focuses more on Open Locks and Disable Device, finding and removing traps and subtly opening locked doors rather than just letting the Barbarian crash through it. He gets a class ability which reduces the penalty for picking locks quickly, and eventually negates it. He also picks up the ability to improvise tools for Open Locks and Disable Device from whatever is handy (search check to find appropriate materials).

At higher levels, he is able to alter the properties of substances (similar to Polymorph, but only for non-living non-animated objects) temporarily. He can't make valuable materials (gold, silver, mithral, adamantine, etc...), but he can temporarily turn a hair into a steel lockpick or probe for disabling a trap. He can also turn a touched item into something less dangerous (changing a steel sword into clay, for example). He can also make subtle changes in the makeup of an item as long as it is not too complex. For example, as a melee touch attack, he could make all the joints in a suit of full plate fuse and lock up, although the target gets a Fort Save.