I don't think anything needs to change.
The NE has a good region, it has more clubs and more racers, and more weekends of racing. There regional is of a different nature to the NW due to this.
The NW has a good region, it has 2 clubs and less racers than NE or even the MW, and due to this, having just 6 events at 2 tracks suits just fine.
Think of the guys from Southport, if they suddenly had Batley/York or where-ever in the NW calender, then suddenly what should be a simple regional series one year becomes a long journey which I reckon they'd struggle to justify doing, people like Russ Dyson, Chris Burgess & family, Barry Weldon, these are the people we need to race at regionals year after year - we need to encourage attendance for the regionals, and a split would change that. (CB, RD, BW, or any other Southport guys, speak up if im wrong guys

)
There is the possibility of a club being part of two regions on separate events, like Bury did in 2006/2007, doing this it could be made so the NE is unaffected and the NW is bigger..... but again, its changing the nature of the regionals and the distance is not fair for the guys over by Southport. This decision is also to be made by the club and the regional rep involved.
What we do need, is another club in the region - such as Chorley, Oldham, Leigh, Bolton, Rochdale..... we have had clubs at all these places in the years gone by, but have been long since closed which is very unfortunate, we're suffering now.
To sum it up, Carl I do agree we need more tracks in the NW, but I disagree with the distance if adding any of the current NE tracks (even Batley). I also would be against it being any more than 6 Sundays in the year. We just need a new club to open - fancy doing that mate?
Chris