Dolphin fan (sigh) here. Anyhow, the basic premise of this conversation is will anyone be tyreek? The answer is no, but this offense may take a slight step forward with Hill being out (sad to say, but his routes were a little off this year)
So, that leaves Waddle, Waller, Westbrook Ikene, and finally Washington
Westbrook Ikene will see the biggest bump in snap share in my opinion bc he is a "boundry X" kind of guy (Harmon calls them Sacrificial X's).
Waller and Julian Hill will see a bump in terms of 12 personell usage
Waddle "may" take some of the Tyreek target share
BUT: Washington may be the biggest beneficiary.
McDaniel is a poor mans Shanahan, so lets look at this offense as it is constructed now in shanny terms:
Waddle becomes Pearsall / Aiyuk
Westbrook becomes Jennings
Waller and hill/Ingold become Kittle/Kuzcheck lite
and, to me, Washington becomes Deebo lite
Lots of schemed targets similar to what they run with Achane, but out of the WR position. I expect his ADOT to be around 3 while Waddle/Westbrook/Waller's adots will be 7+
If deebo/CMAC were interchangeable parts in SF, then I expect that Achane/Washington will be a dime store version of that.