So, to be an independent white dragonspawn abomination kobold, you'd have a total LA of +4, found after a little research (dragonspawn and dragonspawn abomination LA stack).
Still, if your DM was feeling silly and let you choose mutations, and let you choose "roll twice" and then choose "+1 sorcerer level," with LA buyoff at ECL 20 you'd have 17 HD, and a caster level of 26. Totally bonkers.
Do you even get more spells/day or spells known for going from sorcerer 20 to 26, pre-epic?
At the very least, this allows for copious Swiftblade and Master Transmogrifist abuse. What other PrC's that normally would never be taken due to lost caster level would this make attractive?