Thank you all for your responses, I'll try and answer / give an update with regards to the features you've requested, the Yes/No is in regard to what's already been developed, and is already in the game:

Career mode - Yes
Fighter specific special moves - Yes. This will be done in a unique way
Training mode - Yes
Ability to select ringwalk music - Yes
Legends era specific mode with eras rules (15 rounds etc) - No. But I like this idea !
Career mode with ability to create own fighter and take him online - Yes
Different fight styles and weight classes - Yes
Real fighters not crucial if the gameplay is good enough and has the good fictional characters - Yes - This will be a mixture
CRUCIAL for me is the existence of a one punch knockout - Yes
I'd hope in a new game different fighters when controlled by the ai would fight in different manners... - Yes
And of course include toe injuries or being too tired if you have an extravagant ring Walk.. Real problems - Not quite! Without giving too much away....we will give you the option to select the most ridiculous ring walk ever..... and it happened right here in the UK !

p.s What a game Barbarian was....I used to love watching the little guy kick the head away !

Thanks again for your responses.

Cheers,
Ash