Ah, but that raises the question of what do you do with extra Spears Snowcat
Take away the Spear side-support and you have CF 4 v CF 6, and the Spear long
single line is no longer effective. They’d have no choice but to form-up in multiple
lines in order to fill in the inevitable gaps the Pikes will punch in their battleline...
...which ends up looking more like a Roman formation than a Greek one.
Allowing Spears to have +1 for rear-support instead would cure the problem.
They’d have a CF of 4+1 (the same as Blades), so would still be inferior to the
Pikes CF, but at least they’d still ‘look’ like a Greek formation (albeit deeper),
and their frontage would be the same as that of the Pikemen.
This is the approach taken by Shirmplyamazing’s
“Everyone gets rear-support
with reduced heavy foot combat factors”, which I think is a better solution.