One size does not fit all, particularly for small to mid-sized operations. Your site may not be custom built for containerization, or your traffic may be highly variable.
Maneuverability - options for multiple steering modes, low height clearances and poor pavements. Where to position the cab or when to use radio controls to maximize visibility and access.
Performance tuning - finding the balance of performance and cost that optimizes your cycle times and TCO.
Custom handling - whether it be custom loads such as swap-bodies or concrete beams, or custom manipulation such as tipping containers for filling and dumping.