my two cents for how ever much it is actually worth...
1 bikes make better scoring units then terminators do.
2 having both bikes and terminators as scoring units is just fun!
3 take more bikes
4 more bikes
5 upgrade one terminator in each squad to have A:cyclone missile launcher, B:assault cannon
one of my favorite DA lists is...
sammy and beliel
3x decked out bike squads just like you have,
2 x termi squads with cyclone missile launchers 1 in each.
comes out to 5 points shy of 2k