I really like Holgrem, but I think hes a tad overrated. My reasons:
1) He benefited greatly from division realignment. The NFC West has pretty much been a joke in the 00's with the exception of a few teams on different years.
2) His record isnt anything spectacular during that time at 86-74
3) A single NFC Title is all his accolades during that time (I dont count div titles). And where thats still good, show me another teams ring of honor coach with something less.
Guy did good things for seattle and had a great tenure here, but honestly, I think because we were smacked around in the AFC West for so long, we want to praise him to early. Give it 10 more years and we'll see what the Hawks accomplishments are. If we havent been able to top what he did, then by default, I guess he could join the ring.