On a personal note: if you do the slow movement and rolling combined with breathing you are pretty much covering all bases in solo work.
Repeat the drill but now have your partner face the other way and close his eyes so you have to read his tension so you can guide him without getting tensed and rooted in one spot.
Later on you can work with a few partners on a group settings in a more pressure type of work and remember all the implications of your work.
Tips: Keep breathing, relax the spine, avoid getting into a mission oriented frame of mind and just do the work. Being a hero is a good recipe for a story but a bad one for a long life. Keep movement to what works and avoid other movements.
Next have your partner do the same to you and at the same time press his hand or fist to your head. This will allow you to better feel where you bend and twist yourself and you will be able to move more with and guide your partner rather than trying to outsmart or out maneuver him.
You may than add an arm or any limb to the work to help the body work rather than work with your arms and letting the body parish in static. Remember life is movement and movement comes from the breath.
Another way to look at this is in your personal practice. Many times you will be without a partner besides god and you might look at a piece of paper with many instructions on it for help. Keep the parameters to a minimal and give yourself freedom to let yourself truly come out.
My best example so far is to spread ten steps with fists over ten minutes. You are bound to learn something from that slow movement drill and something new every time since you are not burdened by working on everything at the same time.
Second drill: Place a stick over your shoulders or your back and have two or more partners move you with their fingers and later with knives or sharps of any kind. Their goal (note the way is not so important as the end in mind) is to have you collide with the others and you work to keep free from getting stabbed and at the same time avoiding hitting others. You must relax and move freely to achieve this and to relax your eyes as well.
Breathe relax and move, you may think you did something wrong but try to work with what you have and let the way present itself. If you try to win, you work on another and he must loose. This way creates aggression and tension and harms you a lot. Work on relaxing your contacts and see where that takes you.
Breath and let the movement come rather than force it.
Have one partner walk toward you with a fist as the other is holding you and you move the one holding you to have them engage each other and repeat.
Have one partner hold your head and another one of your limbs and move them so they oppose each others intentions.
Remember you are not in a contest in a Systema lesson nor in life. You need to work on not loosing and you will gain control by paying attention to your breath and to your pulse and to your blood pressure.
And relax the face, it helps.