Trade Market strategy?

The imminent update will remove the Powder Master from the game. There's no indication that Powders will be removed entirely, but they're a fairly roadside feature at this point - people use them, but they don't seem important to me. It's unclear what system for Powders, if any, will replace the Master; but if the CT felt that the Master needed to be removed, then it's probable that the replacement system will be somehow friendlier to players.

I happen to have collected, over several years of playing, 27/22/20/29/22 A/T/W/E/F powders of rank 6, plus 44 blanks for 4. Would it be wise to sell all of these now, before the update? Each is priced around 1.25LE right now, so immediate liquidation for safety would yield 150 LE, or around two and a half stacks.