The point of this discussion is mind independent rūpa. The Orthodox position requires this.
Regarding intrinsic nature, it is a complex topic, and in brief what the position has to be is that rūpa does not require citta in order to exist.
When it comes to sense restraint, the more one does it the better. It is supposed to be done with wisdom and support virtue, concentration and wisdom.
With best wishes,
"Life is a struggle. Life will throw curveballs at you, it will humble you, it will attempt to break you down. And just when you think things are starting to look up, life will smack you back down with ruthless indifference..."