Inherently, it seems like a pattern that a tier 4 vehicle is based off a tier 3 vehicle (but not always a tier 2 vehicle).
We have:
Tanks (Ratte, Maus/any other tank, Renault FT (m/40?))
Dump Trucks (WDF, Cat, Diamond)
”Flat trucks” (EMT, Avanta, Terrain Destroyer?)
”Crushers” (Compressor, Slag Pot?, Superlift?)
Horizontally wide shredder (Land clearer, Datcorn (Wheatmaster?), shredder)
Vertically wide shredder (Excavator, Annihilator (trenchdigger?), Mashinator??)
Let me know if you think there’s a better chain for some of these.
But besides that, the pattern is clear. So my prediction is that the next Tier 4 vehicles are going to be..
Something explosive (think nuke truck and fuel trucks)
Something with a trailer (Rostershires, TS-3500)
A bus
Armored transport (think Bank transport)
Something faster than the rest… (think Jet truck)
a Monster truck?
a Bulldozer
Something offroad (think Antarctic ice cruiser or overland train)
a Mobile Home
something for the emergency category?
Come up with other ideas! Maybe make bets on which would come first? I’m interested if there’s other concepts flowing out there.