Say hi to one of my draws. I could take being beaten by you. But a quickplay 6 star boost that has next to no drawback earlygame? Not least of all when you give an archetype card as the gift. It had no business being a quickplay.
I'm repeating myself a bit, but the drawback is that you have to have a card that costs 6+ stars in your hand, which means you have to put a bunch of useless or niche 6+ star cards in your deck, which means you're liable to draw into them when you could've had something more useful instead.
Let's examine what might've happened if I'd used a different stargen engine instead. Say that instead of two Unlimited Maid Works and a Generous Gift, I'd drawn...
Three Grand Canyons: I'd have gotten one star for each of these, plus another card, plus the possibility of playing Grand Canyon itself. So I'm down three stars, but up six cards. (I did include Grand Canyon in my deck, but only at 4 and I never actually drew it, so the point stands: as stargen goes, it's on par with Generous Gift.)
Divine Lambiture: Playing these would've given me one, then two, then three Sacrificial Numbers of the Lamb, each a 0/1 blocker that grants a star upon death. That comes out to six stars—but I'd have gotten the first three stars earlier, since I wouldn't have had to wait for Generous Gift to enter my hand. And since they're on-discard cards, I could've used them as Call of the Grave fuel for an extra 0.75 cards, 0.75 draws, 1.5 damage,
and 0.75 forced discards. Factor in the blockers and Divine Lambiture easily beats Generous Gift here.
I'm not saying Grand Canyon and Divine Lambiture aren't overpowered—they are. But with over 400 cards to choose from, there is a vast wealth of overpowered stargen available. New stargen cards have to be fairly strong or there's no reason to play them over the myriad stargen options that already exist.
I know it's a bit unusual to argue in a card's defense like this, but I'm a little attached to Generous Gift because of how entertaining I find the effect. Anyway, if it gets banned, I'll just switch to Divine Lambiture or a different overpowered stargen card and my deck will be more consistent for it—but alas, much less funny. I had the perfect card to gift to Stirk, too.