Please consider PS vista screen/ ipad as a hot key panel for PS4

I am now playing with DS3 and PS3 key pad as a healer
As you may know a healer need to switch target in a very short period of time and cast different spell repeatedly and timely.
And I believe other class is similar. So 16 hot key is not enough and most of keyboard player has 3 to 5 hotkey bar on screen. And I have used 25 keypad key assigned to accessing the hot bars.
And I am planing to upgrade to PS4 version but the ps4 did not add any additional key to the DS4 and I dunno the touch pad of DS4 could help us to reach the hotkey when we needed.

Therefore, in the up coming PS4 version I wish the dev team could consider to implement a hotkey panel on ps vita touch screen or ipad touch screen(though ps apps). It would be nice that the touch screen could show grid of hotkey and party player (include pet) such that player could tap on the party list or hotbar to gain good respond time. and moving their character with joystick just like playing on other PS game.

Use you're 3rd hotbar, it's in mm, adjust to allow dual trigger hot bar and set your hotbar to weapon out hotbar. This way say hb 1&2 are weapon out, hotbar 1 pops when you pull weapon, hotbar two comes up in two sides, once left trigger first, once right trigger first, give you 32 slots

Also ps4 has mouse pad, it allows you to mouse on controller, I figure I'll set a side hotbar and just leave mouse over it which it allows. Prolly as complicated as having the iPad out though