For me that wouldnt be attractive. I dont like to specialize in only one or two attributes.
If such reward is implemented in the game it would kind of force me to give some more points in only strengh and constitution and totally forget about speed and so on because it is more attractive to me to go for 20 points in one attribut than 15 in one and five in another.
this will be kind of prevent allrounders and only reward specialized charackters.
You're right, the maxed-stat rewards will have to be balanced so that they're more of good bonuses than must-haves that will draw you from your intended build. But since attribute points will be pretty limited, focusing on one will be at the detriment to other attributes, so there should be a compensation to make it worthwhile, hence the idea of a talent at maximum level.
