Your suggestion would add a straight-up bonus to corp members’ effectiveness; there’s nothing balancing this sudden bonus, other than perhaps wardecs. Because of this, these CEO skills will basically become mandatory time sinks, every CEO will need to train them, otherwise people won’t join. So that screws newbie characters who want to create their own corp, for whatever reason, much like the Learning skills used to screw newbie characters.
In addition, corps that operate in low, null, and wormhole space are fine; they attract new people on their own without the need of any extra stuff. Your suggestion is primarily for high-sec corps, who don’t have any incentive to keep their members, because everything can be done solo in high-sec. But instead of some sort of bonus for ACTIVE CEO’s that try to put some effort into attracting and recruiting people, you’re just suggesting a blanket bonus for everyone, regardless of how active they are.
Ultimately, you’re trying to make staying in high-sec more enticing, compared to getting the hell out and joining a real corp where the game is at its best. Which is ok I guess, but probably not what CCP wants. So I doubt that they’ll implement this.