My interest is involvement with a website dedicated to taking beats on boxing and MMA as there is no website that specialises in these two combat sports.
Theses sports have a global audience.
A point of difference as no other sportsbooks cater strictly for boxing/MMA so could be promoted directly to the boxing/MMA community.
Both sports have high PPV numbers.
Many events around the world do not offer betting options.
There are novel new betting options that could be offered, such as between rounds betting or chance of knockout etc
Possible joint ventures with promoters for live internet broadcasts.
Could still offer casino and sportsbook built around fight betting theme.
My background is in promoting managing and matchmaking professional boxers so I have many worldwide contacts in this sport that I could generate interest with and I know there is no sportsbooks that cater to these sports.
I know there is many other things to consider but just thought I'd share this idea.

Cheers.