I'm working through creating an Elemental Bloodline Sorceror and I noticed that their 19th level Bloodline Spell is Elemental Swarm which is only listed as a Druid 9 spell. I haven't looked to see if any other spells they have access to are like this, but should we assume that in these cases the spell becomes Sorceror X, with X being the same level as the Cleric/Druid/Bard spell? I know I have players that will make a stink about it as some spells are different levels for different classes. For now I'm going to rule Sorceror 9 for the level of this spell as it's pretty obvious to me it should be this.
Heh... yeah, it's not spelled out anywhere that the spell gained at 19th level is a 9th level spell. Nor, for instance, can you say for certain that a 3rd level Celestial sorcerer isn't gaining a 9th level version of Bless which they can't actually use for 15 more levels. Hadn't noticed that!
The intent is pretty clear, though. The bloodline bonus spells are of the highest level you can cast at the time you receive them.