Smart Ablution / Wazu
The reminder of cleanliness is the rationale behind it but doing it as prescribed is the ibadah, and all rituals in ibadah are very important to be adhered to in normal circumstances, therefore, there is no possibility of a smart walk-through ablution. To understand the importance of rituals prescribed in any ibadah, please refer to the link below from 40:35 to 41:59 ilm-o-Hikmat 11-09-2016