1) Atempts were made, in the first Empire. Archaeologists are certain the first emperors were dearly involved in Ayleid sorceries. You might say there was a 'revival.' The Emperors of the first era were consistant in the primacy of the title 'Prime Thaumaturge,' or the best miracle worker. These wells could supply them with mana for the miracles they workd. Loss of the wells could have contributed to the decline in fertility rates in the first Empire. It's a hypothesis which was studied. Possibly the end of the final 'Alessian,' dynasty. We know the doomstones maped a transit route through the spirit plane, which those Emperors used to project their person across the corners of the universe.
Que? The beginning of that I followed but I lost you at about the fertility rates part. The runestones are independent of the wells. The wells are more concerned with earthly magicka while the runestones are concerned with the stars. Also, the first empire was intensely anti-elven as a reaction to their slavery. They wouldn't have studied and recreated a symbol of their oppressor.
On topic, though, considering that we don't know how to properly use Welkynd and Varla stones, seemingly commonplace objects in the Ayleid kingdoms, then I don't think that we would be able to recreate one of their longest-standing enchantments. Supposing that they did, given what limited knowledge we do know of the wells, that object would have to stay right where it was in order to be able to continue collecting Magicka. It is possible, nay likely, that the Ayleids charged said Welkynd and Varla stones via those wells, assuming that they needed charging in the first place.
Hmmm. I'm gonna continue pondering on this. I'll get back to you on it.