Understood. My point regarding easements was because an allegation that you are seeking to enforce an easement on the neighbors property is a property right that is well settled in California. And likewise used as a legal basis to support the lis pendens. It’s an interest in that property that you own.
Many easements are not written because they don’t need to be. They exist by operation of law. And why I suggested transferring the case. Any reasonable litigator can accomplish that. The amended complaint will allege your easement interest in the property.
But it sounds like you have a decent handle on this.