If you want sintered AND the rest of those options... I can think of nothing.
Signal Rocker light is your closest but they don't have "blunted" tips exactly. It is however a fantastic board.
Park Flat is softer though and personally one of my favorite boards to jib around on. Because of the rocker the Light is just as jibby, its just the overall feel. I like the feel of the board being bent more than what any kind of rocker gives. Characteristically my jib sticks of choice have been flat or camber. If you like the feel of rocker on jibs (like 70% of people) then the Rocker Light is bomb.
Also a soft downsized jib board with 3 stage rocker is just not going to have superb grip on ice. Accept it and move on. You're best bet here is also going to be the Signal Rocker Light as the rocker kinks sort of feel like pseudo contact points helping a bit with grip.
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