This is a good point, but I'd simply write off chipped gems for now, since they being nearly as good as the real ones would, indeed, simply destroy the point of gemming UGs right now, considering their availability. However, going up to cracked gems might not be out of reason, since a lv3 cracked is still worse than a lv2 UG and cannot be improved further.
Another valid point; your idea is awesome because it removes Dual Str scaling and as said again I approve of it.
Edit: Forgot to add, yeah chipped should not be implemented <- you already explained it, im off to work now haha.
->The issue is again stated above, right now the only problem is again Cruses are getting +27 Str if this is implemented and the only way we can approve of this is if the community and Zankza approves of it.<-
One reason and the only reason I would stand for this is that I am a Crus, but 99% of me see's it as a liability because Crus is just a good class it has great passive+attack skills and it scales very well in all aspects of the game in Dodge, Def, Hitrate, Attack speed, and most of all Damage if this class had WindWalk it would be a God Class if it hasn't been already(I'm sorry there is no way around it you can cry and complain but that is the facts lol it is an overpowering class by default if you look at the mechanics as a whole compared to other classes) Adding More damage and aspd (and towards end-game these two go hand in hand) to a class like this is a clear imbalance to all, even early on.
The positive I see in this
(take away the crus aspect for now) if it is only cracked gem's is the economy and community by assumption (I won't go into detail on each point unless I have to, it should be easy to understand):
-All classes will benefit from extra stats (from lv45+)
-All of the Leveling and Farming will be better due to the stats (from lv45+)
-It improves the FC community, people will make chars and go down there for its sake
-DS community is already alive, people wanting to go FC will produce a better market for FC unseal items (if it isnt a rarity already lol)
-Refs will be in demand, having both the FC and DS community on equal footing for farming and money.
It has good points, but the balance for Crus through the gems is the issue. It creates a snowball effect for the rest of the classes because they still need to compete with them, sorry but not sorry to say 9 Con isn't enough for other classes it does not scale well in Def and HP ENOUGH to make the 30str that they are gaining a balance.
P.S Crus can get that 9 con as well lol, and they get some good adds with that.