I do not see why it would be considered an exploit or cheesing to use the rules as they were. It was not me who had made them, but as every optimizer I used every bit of options available. I can't accept that this would be considered a insignificant enough way of using the rules. What is not forbidden can be used, that is the way I see things, whatever the way things were meant to be, and my imagination thrives in using everything that was meant to be used somewhere else, that is the way of powerbuilders, and I am not the better one by far.
As a game master myself in twenty years of RPins, I have never made the players pay the price of rules changes, and always accepted they were finding new ways to circumvent my challenges. Luckily that happened a lot.
Game rule changes, when they are made with autoritarism and "this is like that, shut up" are usually a good way to destroy the good will of players and provoke ressenting.
Now this small change I even welcome it, but I consider this could be FAIR to compensate the shard costs that was paid to benefit of this rule previous status, whatever the considerations about wether or not powerbuilding is good or bad.
We are talking there about a lot of shards ! This is not as easy to get as you think ! And No, I am not rich. I spend lot of my wealth on new players and even if I was so rich, I want to decide what I do with it.