If they remain healthy for the next 6 - 8 years then Earl Thomas III and Sherman will probably make into the Hall.
I don't know for a free safety but for a corner back, if Sherman can put over 50 interceptions, 5-6 All Pros and even more Probowls, I think he'll definitely make it. He's off to a fantastic start with 20 interceptions thus far.
For a quarterback, in a pass happy league, Russell Wilson will have to have at least 300 touchdowns, possibly much higher, to make it without SB rings to make it. But with, say 2 SB rings, 250 touchdowns and 40k passing yards will probably be enough.
Here are Wilson's numbers thus far:
6400 passing yards
1000 rushing yards
52 touchdowns (19 interceptions)
24-8 W-L regular season record (.750)
3-1 post season record (hopefully 4-1 soon).
63.6% completion
100.6 passer rating
If he can maintain this rate for another 10 years, which will take him to 35 years of age, then his projected numbers would be:
38,400 passing yards
312 touchdowns
At least 120 wins (assuming he wins at least 10 games a season)
Passer rating in the 90s
~64% completion
With those numbers, if he were to be compared to other QBs of his generation, I don't think he can make into the Hall based on how pass happy the league is at the moment and the foreseeable future. The numbers going for him are wins, completions and ratings. I think those are more important but you can't ignore touchdowns and passing yards. But if he has, say, 2 Super Bowl rings on top of that, he'll definitely wear that gold jacket on his 2nd or 3rd year of eligibility.
Now for Marshawn Lynch, I love him a lot but he doesn't have the numbers and his age isn't in his favor unless he can be productive into his 30s. Lynch's current numbers:
Rushing yards - 7,389
Rushing average - 4.2
Rushing TDs - 58
Compare that to Jerome Bettis:
Rushing yards - 13,662
Rushing average - 3.9
Receptions - 200
Receiving yards - 1,449
Touchdowns - 94
1 SB ring (

ukeface: )
This is Bettis' third year of eligibility and he may not make it but I think he eventually will. So in order for Lynch to make it, he has to: at least 1000 years/season for the next 5 years @ 10 rushing touchdowns/year. That'll give him ~13,000 yards rushing and ~100 touchdowns. Given Lynch's age (birthdate April 22, 1986) and his punishing style of rushing, he has to be injury free and productive until at the end of the 2018 season.
As much as I like him, I don't think he'll make it, sadly. The odds are overwhelmingly against him.