A 1st or 2nd does not need to be used on a WR anyway. They are always available. Diggs, Adams, Cooper, Hopkins, Williams. Everyone is looking to trade WRs. Build the rest of the team first then WRs will be available for pennies on the dollar.
Yeah and with those trades come big $$$ contracts and the loss of picks. Just like QBs if you don't have a top 6-8 guy you keep looking. But pick a great WR in the 1st and you got a great one on the cheap for 5 yrs