Within L2 dealer you can select various columns to view including 'Last' - which should display the last traded price. However on SETSqx and SEAQ stocks it displays the share price or the midprice. I only notice these stocks moving if the bid or offer price move losing the opportunity to react quicker if I had seen the last traded price(s) and the following trading movements.
I have made your technical team aware of this issue since May 2017 - but continually get no fix. This should be a simple fix for anyone technically minded but don't have much hope as we are soon approaching 2018.