Cadfan said:
In addition to the obvious fact that there's opportunity costs involved, its also worth noting that more bonuses increase the space for design. Right now there's a small amount of variation available before you need a level adjustment.
Let's see if there is
net +4 bonus (I'm avoiding +4 to one stat, that it a no-no):
There is 15 combination of choosing 2 abilities to have +2 bonus each.
There is 60 combination of choosing 1 ability to have -2 and 3 to have +2
There is 15 combination of choosing 2 ability to have -2 and 4 to have +2
Sum=90 different race
net gain of +2
There is 6 combination of choosing 1 abilities to have +2 bonus.
There is 60 combination of choosing 1 ability to have -2 and 2 to have +2
There is 60 combination of choosing 2 ability to have -2 and 3 to have +2
Sum=126 different race
net gain of +0
There is 1 combination of not having any bonus or penalty.
There is 15 combination of choosing 1 abilities to have +2 bonus and one to have -2.
There is 90 combination of choosing 2 ability to have -2 and 2 to have +2
There is 20 combination of choosing 3 ability to have -2 and 3 to have +2
Sum=126 different race
Thus more space might not be behind the choice of 2 abilities having +2 (but my math might be flawed)
There is 30 combination of choosing 1 abilities to have -2 and one to have +2.
So there is more space for game design indeed.