Also to recapitulate:
Foundationally speaking, the base Maintenance Cost Percentage has not changed from that of any previous Version of AIC.
So if you always set the maintenance of =0 then there is no effect what so ever.
However, it will get a little pricy with the additional 200pt cost over 5%, now.
If I am not mistaken; going to 5% maintenance is basically the same as v3.02 and may be even cheaper then AIC Versions before 3.0.
Granted the Characteristic Maintenance Aptitude Threshold is now (5%) in v4.0 where it used to be (10%) with Version 3.02.