Storm isn't going to be played without LEDs, legacy in general isn't playable without the key reserved list cards.
I'm pretty sure WOTC is extremely happy with this, after all, if a reserved list staple is big in price, a card nearly as good will be pricey also.
They can't reprint reserved list stuff since that would ruin the confidence people have in the secondary market, but they sure can print new cards with similar yet slightly inferior effects.
Tabernacle with an upkeep of 1? Tabernacle with an upkeep of milling the top 3 cards of your deck? Tabernacle with an upkeep of 1 life?
Plenty of possibilities to print stuff nearly as good as the originals, ensuring product gets sold and hype is generated.
I am willing to bet that within the next 5 years they will print flip-lands, aka a land that can be fetched as 2 types of basic, which can be played as either one type and remains that type for the rest of the game. In some situations they would be superior to duals, in general they'd be inferior .. but they'd sure as fuck make people buy a ton of sealed product, without significantly affecting the price of the original.
Looking at
UR Pyromancer - diophan @ mtgtop8.comfor example, these decks have an average price of >10k$?
Format still gets played. They could make a card slightly better then monastery mentor to sell more sealed product, but they might as well print cards which are slightly inferior to the power cards, when aiming for sales both work, so should availability (not purely price, WOTC doesn't care if moats cost 1200$ each) ever become an issue, I am positive they have this plan ready to go.