Not if your partner insists on playing games. You won't get any improvement that way.

I should step back and say that where I've trained, in most cases the sensei wants you to try to do what she/he is teaching you. Indeed, some take a very dim view of improvisation. When you as uke decide that you want to cheat, use your knowledge of the technique that's about to happen and so thwart it, you put your partner in a very bad position. Your partner is expected to do a certain technique, and by your behavior you've just made that impossible, or at least not the optimal response. Your partner now has two bad choices: try to half-ass the technique that they're supposed to be doing, or do something that works better given your behavior and possibly annoy sensei. How does a good training partner force their partner into bad choices?

Others have said it and I will repeat: this is training. Arguments about "but but but if you were in the STREET" are invalid here. Sensei's perfectly entitled to insist that you do what's being taught. Surely complying with that is part of "leaving your ego at the door".