Requesting some Insight

[PaolinoPaperino]

With the 4 unit max rule in v1.02 these days you almost know sasaki's army!

In fact you can say that almost all armyes in 1.02 are a slight modification from a hard core army. There are than few additional units chosed from personal preferences/terrain/opponet/supposed weather/tactic.... general's mood, etc..
Boring uh?
Dunno if a single yari cav would do a great difference Duck, if you waste koku in upgrading units as Mime described. Under a strategical point of view, if you have a tactic requiring a unit with a peculiar ability to be exploited, than it's usefull to pick it from the list of available units... but as Mime said: it's not enough to become a regular addition(ie: not everybody has the necessary skill level to handle the tactic you described).