If you think there is a strong and sustainable future for BMI and you think that the current management are genuinely interested in the same ideals of you and your colleagues then by all means stay.
The fact that you are questioning this probably means that you are unsure about certain aspects of the future. Personally my future security is of utmost importance so I would be tempted to bring the ball into my own court and join an airline where there is a known and definite(aviation definite) structure for your command prospects.
All your chat of great colleagues and good place to work sounds very similar to another thread about an airline which has been recently purchased(GB)..and by all accounts none of these guys saw it coming.
Take your future into your own hands and if you have doubts, join an airline where that doubt no longer exists...if there is such a thing!
This is by no means a dig at BMI as I know nothing about them, just responding to your doubts....be it about any airline!
