what new aircraft do we need the most?

[JG14_Jagr]

I think when you are talking about what should be added you need to keep the scope narrowed to this particular period.. A Ju52 was HUGE in the LW, buts its role in the BoB was next to ZERO.

I would want in this order...

SpitMkI
SpitMkIA
Hurricane MkI

Bf109E3

Get the FM's of these fixed before worrying about ANY new work They are the cornerstone of any BoB scenario

Once that is sorted out, then Add the Do-17Z as a flyable, Add the Bf109E4..

A Bolten Paul Defiant would look really cool.. but in practical terms it would end up as popular as it was effective..so maybe its not worth the time that iwould be taken away from something more pressing.