I want to see an option for "freezing the calculations" . This would help me run other programs on my computer when I need it for short times and continue simulations when I leave ( something like a 'clean abort' in HFSS ). Otherwise MWS hogs up the system usage to fullleaving me unable to even open a pdf.
I also would like better support for "Periodic Boundary Conditions" some thing like the Master-Slave boundary condition in HFSS so that I can simulate PBG unit cells whose lattices which are of non-square geometry.
You remind me another feature svarun. I hope they add an option to continue a stopped simulation like the option with RSOFT's Fullwave. In Fullwave you can stop a simulation then analyze the results and if you are not satisfied with the results you can continue to the simulation where you left off. But now with MWS to do such a thing you have to start the simulation all over.
Remember, you can always use task manager to stop MWS using all resources on a Windows system. Set it's priority to low while you do the other things, then put it back when you have finished.