I have touched on this before in an earlier post (http://www.rolemasterblog.com/rmc-house-rules-character-creation-2-potentials-stat-gains/) where I said that the stats you are using are the ones you roll for.
What I want to do is break the connection between every time your skills improve you also do your stat gain rolls. This is one of the things that I feel sloows down the character maintenance in Rolemaster.
The problem is that went a stat changes a whole host of skills change with it. The problem is even slightly exacerbated by my use of the smoothed stat bonus. Where there were only 5 real break points where stat bonuses change (+5 through to +25) now there are dozens.