If Suarez could finish he would be a good poacher? well... dur? Isn't it a poacher's job to finish?
That's like saying 'He'd be a good actor if he could act'
If you want to take an extremely simplistic view on it. You need the right movement to get into the positions needed to score, which many strikers seem to lack, you can be the best finisher in the world, but if you don't get into the right places to shoot or predict where the ball will be going, you won't score many goals. You need the technique, first touch, heading, speed, acceleration, dribbling (to an extent for the last three).. yeah you need quite a few attributes. Rarely do you find a player that has all of them, Suarez has most of them, and who is to say his finishing won't improve.
As someone said, I'd like to see us go in for Huntelaar, I've been calling for it for 3 seasons now, really want to see him in England. He's a more realistic option than someone like Fernando Llorente.
He has the build that, you imagine, would do well in the Premier league. Would be a good signing for any club over here.