Before I make my statement, I have to say that this is perhaps the greatest run-on sentence I have ever came across. I commend you for having me squeeze out every cubic centimeter of my lung capacity to finish reading it.
You have great point, and I kinda have to agree with you. Many items are in great demand but low supply, and it's bad enough that they're hard to land on in the altar. This previous SS altar was nice, but came somewhat as a double-edged sword in many ways. I spent around 105 ECs on it....and the only good things I landed on that were worth any profit (due to the price of each EC) were a pack of 35 SS, a Charmed Exorcist Robe, and 4 Corona's Essence 75s. Out of 105 ECs, I this meant I landed in 5-7th tiers at least 4 times (and this isn't counting on the times I DID land in it only to fall into a gold EC, or War Stone, as was the case with the SS altar). Doing that probability, of all my ECs, only .95% of them landed on something worthy (note the decimal please). I know these results may vary between players, but for a game where many items on altar are in high demand (chisels, coronas, safety stones, etc.) it would be logical that by landing on these much-needed items more often we'd have a demand met, not starved and then fed through a tube.
Note: there was a rumor that on Sapphire the chances were increased, and we've seen em on several players. The Aurora Lance became so common that those wanting to sell them sooner lowered their prices down to 12k, a nostalgic price for such a commodity. Even Memory Tomes went from 900g to just around 200-350g. Just an example of the possible benefits of raising the chances. The playerbase has nothing else but to be thankful for it.