I hope Ryanair continue to grow strongly at Manchester for a long time to come. It would be great if it could get something like 10 or 12 a/c in the future.
It really does seem now that obviously Stansted, followed by Manchester alongside East Midlands stick out as the main Ryanair bases in the UK and generally nowadays have seen the most growth. Regardless of what some people might think, I don't think it's a co-incidence they are all MAG owned airports. Ryanair and MAG are working very well together.
I suppose it could be an argument of too many eggs in one basket. Maybe Ryanair are growing mostly at the MAG airports so that they are less likely to want to upset them again like they did in 2009/10 at Manchester.
Edit: Also just wanted to suggest that it's quite possible one aircraft from Liverpool will switch to Manchester since it seems Manchester will have 7 and Liverpool only 5 next year (they had 6 each this summer but MAN had a lot more W's).