The "Eastern Conference Tax" for an Eichel trade likely isn't going to make what their ask is that much bigger than what they're asking from Vegas.
Is there a chance? Yes. Is it likely? No.
Some teams take it really seriously. I remember with Sens and Karlsson an Eastern team had a better offer apparently.
They even put a conditional 1st round pick in the trade where if Sharks traded him to Eastern Conference team *that year* they would get the extra 1st.