Game sense issues become less of an problem if you play him right. IMO he rucks at the bounce when Goldy needs a rest, and when in the forwardline at ball ups or throw in he plays as the third up and puts the knee in. The rest of the time he plays as more of a stay at home full forward. Even if he can't outright mark it as long as he brings it to ground he should win 90% of all 1 on 1 ground ball battles against a KPD.
Looking forward that's how I see him once one or both of Drew and Waite retire. If Brown can gain even more core strength and stop running under (or getting pushed under) the ball then he will be a monster leading forward pushing up the wings.
Daw has some ridiculously good attributes that are too good to squander, but he also has some glaring weaknesses that will take time to overcome (if he ever can), and time in the seniors at that. We can't nullify all of his weaknesses at all right now when he's playing as the 27th tall forward in the team. When he's one of key KPF himself though, and a lock each week, then we can.
We risk losing him to a team that CAN play him as a best 22 player week in week out if we aren't super serious about getting him locked up. It's the same situation as Dumont (although Dumont has far fewer weaknesses), we can't fit him in as a regular player right now but there are plenty of clubs that can.