Whether they had very limited printing runs or weren't even available to the general public, only being offered to employees of the company, these cards are easily the most difficult to obtain cards in all of Magic
That means its highly unlikely we want any spells that actually cost three mana no Courser of Kruphix, no Temur Charm, no Goblin Rabblemaster, no Savage Knuckleblade
Grumgully, the Generous looks like a simple value card at first, but it goes off with persist creatures, which return to the battlefield with a -1/-1 counter on them when they die
The Lord of the Rings: Tales of Middle Earth Commander deck Food and Fellowship , may be a good starting point for building Halfling tribal, even if the dominant theme of the deck is split between Food tokens (lilfegain) and Halflings
And of course, we'll be waiting with interest to see what that internal review turns up