Not knowing, just speculating.
If I choose to specify a further aft number for my max forward CG (and accept the loss in flexibility in loading) such that my CofA says "max fwd 15%cg" instead of "max fwd 10% cg" then I may be able to take advantage of:
* slightly better stall speeds due to less trim downforce at the stall
* slightly better Vmu speeds
* slightly better rotation characteristics (if my mistrim case drove minimum Vr, perhaps)
Alternatively, if your nosewheel is load limited, by having a forward cg cutback, maybe the structural MTOW can increase?