It is more a question of balancing the assets while the corresponding techs become available, from scouting tasks to an all out war against AI - we still need variable sizes to pack a deck of attack or faster engines.
I've altered these values in X-Worlds ships, but for different reasons...
TSMLCH (Tiny to Huge) default sequence was; 16,24,48,80,60,150.
I modded that to be; 20,32,56,92,76,128. (For example, the cargo hull has been sized 16+ for an extra module & just 4+ to the scout makes a whole lot of difference for the early exploration "Range power" of AIs, etc.) Note that HitPoints estimates also have similar effects on combat - when modified.
GC2Types.xml is the file you'd want to edit -- but, be warned that any changes have huge impacts on gameplay dynamics if only because components DO take space off whatever new limits written in.