Originally Posted by DIGITUS
The lead riff that comes in over the main riff helps but in my opinion, it's not really enough. It has similar tonal qualities and it relates to the main synth riff which hasn't changed and can still be heard clearly. Listeners need a complete break from hearing certain sounds after awhile. This is especially true for higher pitched piercing sounds which cause ear fatigue quicker. PsyTale is correct about the dynamic issues too.
Will keep that in mind. Got an idea, will try it out and see how it goes.