I think there's a good chance of that now - as the two main draws imo (epic halloween and whispering tower of horrors) have already been spent in the first half of the event, and they don't repeat prizes anymore. So you'll have people hoping to swap into something good - and probably dumping keys at the end now. I do expect whispering tower of horrors might've been a pretty good mark for "everyone's spent their keys to this point by now, right?".
Monster Wares might appeal to some who are still looking for GE5 buildings. So it might be a little bump. But i don't expect much of one. I would plan on reaching 7000 minimum if you want gold. I won't speak to whether or not that's realistic as it'll probably vary significantly from player to player.
I can fight all GE5 except the last 3 stations.
But I also need blue stats to defend my city , against plundering or the middle option PVP.
And since Inno made blue stats relevant again, for GE5, they might be something more in the future, so it's better to stack up again on blue stats.
I wish I hadn't delete all my Tactician Towers lvl 2, in the last years