Some.
The fact that someone is, or is not, in a Top 8 side carries a lot less weight than many think it does in my opinion. There are countless examples of duds not only playing in Top 8 teams, but winning competitions. The reverse is also true, with many examples of champion players stuck in woeful teams (basically, anybody involved with us for the past 12 years).
Now, back to the efficacy of signing Terrell when based on what he's currently shown -
His output is pretty good for a bench prop, without being outstanding. His tackle efficiency is quite good, his metreage and tackle-breaks are ok and he seems to run with purpose, which I like. He's a decent bench prop as it stands right now. But there are probably 15-20 'decent' bench props in the comp at the moment.
The main point I was making, was that he offers no upgrade on the likes of Pole, who I think is a far better prospect, is younger and has a higher ceiling. We then have the likes of Twal and Seyfarth on the books, who, whilst not as impactful, I would argue are more reliable middles and undeniably more well-rounded when it comes to effort on effort moments. We then have the likes of Kit, Faagutu and Jordy Miller who are 12-24 months away from being around the 17, if not mainstays, so it would be sideways signing at best and a pathway blocker at worst.