I've put some work into Gifts a handful of times over the past few years. I never found a list that worked for me, but I'll throw out some of my thoughts on the card, which might be useful to you
value gifts
a "Value Gifts" like you mentioned, is when you get multiple good cards which improve your position rather than going for a kill. It can be useful when you're too short on mana to win this turn, but is also a useful way of fighting through disruption. Traditional combo Gifts may lose to a single well placed counterspell or graveyard hate spell, and the "Value Gifts" serves as a hedge against that.
In particular you want a set of cards to get with Gifts if you suspect your opponent has specialized disruption. That is, most players will Force of Will, the initial Gifts Ungiven, but they can't Misstep it and they can't always Flusterstorm it, so a good Value Gifts is going to be able to punch through a hand that has Missteps and Flusterstorms, as some lethal Gifts piles completely fold to them (or to, say, a Ravenous Trap)
Cards that do something from the graveyard can really make a "Value Gifts" get out of hand - my old favorite is Deep Analysis, but cards with Flashback, Dredge, Retrace, Aftermath, and Jump-Start all work, if you can put 3 or 4 in a pile, you can generate some serious advantage.
lethal gifts
The cheapest deterministic Gifts kill with no additional requirements is Time Vault/Voltaic Key/Argivian Find/Reconstruction which clocks in at 6 mana post-Gifts. I don't know if I'm into this because of how much worse it is to naturally draw Find/Reconstruction than the cards that other kills use.
Traditional Gifts decks used Tinker->Colossus and Tendrils of Agony to kill with primarily ... but traditional Gifts decks used Darksteel Colossus rather than Blightsteel Colossus, and had to set up turns where they could cast Time Walk twice. A Tinker kill requires significantly less Xwork today ... a Tinker, Time Walk, Recoup, Black Lotus pile will kill for 8 mana, but the cost drops dramatically if you naturally draw any one of those cards (or a Yawmoth's Will, etc.)
If you're casting Gifts at the end of your opponent's turn, which is fairly common, you can take advantage of your draw step and get topdeck tutors, which makes things cheaper. Vampiric Tutor+Mystical Tutor+Demonic Tutor+X is an old standby. X could be Voltaic Key in a deck that runs 2 Keys, or just a Black Lotus or Time Walk to set up a gigantic Yawgmoth's Will
Any Snapcaster-like cards in hand bring the requirements way down. With a Yawgmoth's Will in hand you can just get 3 fast mana cards and a Demonic Tutor and go wild.
Jace, Vryn's Prodigy was particularly interesting to me, with its mana-free recursion. With a JVP in play, you gifts for Dark Ritual+Cabal Ritual+Demonic Tutor+Dark Petition and kill for only 1 mana post-gifts, with no specific requirements about what cards you've drawn already besides having threshold for Cabal Rit, which isn't super hard to have after you've resolved Gifts and activated JVP. (it's a complicated kill, but it works)
miscellaneous
People who didn't play Gifts years ago pretty universally look at old lists and replace the Recoup with something cheaper, like Noxious Revival. I think largely people are missing the benefit of the recursion spell itself having flashback. To find a specific card with Revival, your gifts needs to include that target card, and Revival, and a second recursion spell like Snapcaster Mage, leaving you one slot to play with. Because Recoup works from the yard, you only need to get the target card and Recoup, which frees up a second slot that could be used for anything. When you're setting up a Yawgmoth's Will turn, that extra card can be huge. Recoup costs 2 more mana than Snapcaster Mage, and 4 more than Noxious Revival, but if it lets you put a Black Lotus in the pile, you're getting 6 extra mana on your Will turn. All of that said, I still think it's reasonable for a Gifts deck built today to just run 4 Snapcasters maindeck and plan on drawing one naturally rather than putting them in a Gifts pile, and skip the Recoup entirely ... but I'm not personally a fan of Noxious Revival.
I've played Intuition for 3 Ancient Grudge before, it's as good as you're hoping.
I've also played Intuition for Life from the Loam+Strip Mine+Raven's Crime ... it's ... not good.
Ultimately I've found Gifts decks to just be too weak against modern tempo blue decks. Flusterstorm, in particular, is a real problem. I haven't seriously explored the archetype since the Thorn of Amethyst restriction though, which could possibly free up some space for addressing blue decks.
