Run as many events as you want during these periods (and plan how you'll distribute your two promo cards)
The last time we saw the meld mechanic was in The Brother's War , and we got some of the coolest commanders we've ever had in Titania, Voice of GaeaTitania, Voice of Gaea, Urza, Lord ProtectorUrza, Lord Protector, and Mishra, Claimed by GixMishra, Claimed by Gix
Naktamun Lorespinner Naktamun Lorespinner prepares the table for trouble with Wheel of Fortune
I do wonder if the heavy emphasis on treasure generation in the last few years have made cumulative upkeep not enough of a downside when considering a card for draft and sealed
There are infinites and near-infinites to be had here, and in most cases it is more a payoff for drawing cards which is already a good part of your game plan