I think in an ideal world a flat ride would have replaced Slammer this year, helping to revamp the area, draw eyes to that part of the park, then you have a ready made new support ride for Exodus next year for people who haven't visited in a couple of years. Black Mirror could still exist in the space too.
Hopefully the park revamp the toilets in the area too. Again, they need it, and they're the last ones on park which need it.
The biggest 'disappointment' in my eyes over the Exodus investment is the lack of anything else (as things stand). We're getting the coaster, and then either a shop or food unit with it. That part of the park is in need of another non-coaster ride, another F&B unit serving lunch options and a shop as a minimum ideally. Hopefully it'll all come sooner or later, but it's a bit of a disappointment it's not all as one big cohesive investment.