That depends entirely on you, really.
If you think you're just coasting with any lift, then you shouldn't be (I don't think this is the issue, mind).
However, when it comes to front squatting, yes, you need to mix it with RDLs or something similar due to the increased quad-centric nature of the squat. So your RDLs will be useful here. Then, depending on how you position for the BSS will determine what gets hammered (i.e. longer stance = hamstrings; short stance = quad).
Trap bar deadlifts are more reminiscent of a squat than an 'actual' deadlift, but pffft.
So overall, your leg routine is pretty good in terms of 'roundedness'. One thing I am doing, however, is swapping my silly front squats (12-10-10-8-8) for high bar back squats, simply because the movement is pretty similar (as is the stress on the legs) and I can shift bigger loads without worrying about my core bracing limiting the volume, so that might be something you want to consider if you're looking to give your legs as good a hammering as you can without leg-oressing/whatever.
Ask BennyC. He loves front squat widowmakers.