I don't think
Jane is boring at all. It's so simple that it stands out! However, when you put it in the middle name spot, it gets boring. I much prefer
Jane to
Jayne. I think
Mary Jane is a terrible idea, though - it's either a shoe or a slang term for marijuana.
Anna Jane is lovely, but I'd put
Jane as a first name instead.
What about some of these:
Jane ElizabethJane AnnabelleJane Eloise (omg, love this)
Jane EleanorJane HermioneJane LysandraJane ElissaJane Aquinnah
Jane EmmelineJane ArielleJane EmmanuelleJane EvelynJane HadleyJane CarolineJane CarlottaJane LucilleJane LucindaJane GuinevereJane Vivienne