I appreciate your input guys, you make some valid points, my original idea for the combined trinket still appeals to me even so, the idea of an end game item to equip in place of a trinket with assignable slots for trinket buff still tickles my fancy, whether it be something you have to make or something you unlock I'm not fussed about.
I understand that it might seem unbalanced to have multiple trinket buffs at the same time but since this was intended to be an endgame item I didn't see it being much of an issue, since the story and such would be complete by the time you obtained it anyway. I'm not saying you should be able to have all the trinkets combined as one item but I feel like 2-3 buffs would be a nice sweet spot.
Either way I still strongly feel like a dedicated tuft slot would be a life saver, jumping from places and zip lines while forgetting it's not equipped is a nightmare lol.