I am fully aware that me insinuating that you think the Sha Guarding is OP and need nerfs and not buffs was very very far-fetched but honestly, I have no idea how to otherwise interpret what you wanted to say with your post without more information (which you added in your next post). I was trying to be funny while making an obvious bad point.
However, I agree with you only a little. I think it is the other way - instead of players needing a lot of time to react to metas and know-hows in order to start using all the options available to them I think it is the leaders of T9A that are slow to react to obvious balance problems that exist throughout the game. They are miles better than GW (who did it once every 5-6 years or so), but still far from where I would want it to be.
Exact balance is impossible to achieve in a complex game as this. When balancing, determining if unit X should increase +1ppm or +2ppm is almost impossible to decide, but using just a teeny bit of math knowing if unit X should benefit from +ppm or -ppm is not that difficult, ie telling you in what direction you should be headed. The balance is then perceived by continuous and constant change that shift the powerlevel between units, instead of the current situation where everybody have had the time to understand that list X is the best list and thus is seen 90% of the time. This is IMO bad balance.
If you look carefully over the last 18months, I think you will see sufficient counter-examples to what you are saying to allow you to develop your own ideas further without any input from me.
However, remember that stability is also a key thing: the project got a lot of criticism for how fast things were changed.
Yearly points updates is a compromise that the project has settled on: the constraints, concerns and considerations leading to this are not all about balance.
Indeed, isn't it funny how much abuse the project got for caring only/too much about balance, but now there are only yearly points updates, suddenly the project should be worrying more about balance...