B727-200. N90 CTLR GAVE A LAST MIN RELIEF OF XING RESTRS TO PREVENT A PLTDEV ON THE KORRY ONE INTO LGA.

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I WAS THE PLT FLYING THE KORRY ONE ARR INTO LA GUARDIA NEW YORK. THE AUTOPLT WAS ON AS WE WERE DSNDING VIA THE KORRY ONE ARR. WE HAD MADE ALL THE APPROPRIATE XING RESTRS SO FAR. I WAS BRIEFING THE LDA A APCH WHICH WAS A LONGER BRIEF THAN NORMAL DUE TO NEW PROCS AT OUR COMPANY FOR NON PRECISION APCHS. NONE OF US HAD YET SHOT AN APCH USING THESE NEW PROCS. THEREFORE I GOT A LITTLE BEHIND THE AIRPLANE'S DSCNT PROFILE AND THEN APCH CTL ASKED US IF WE WERE GOING TO MAKE BRAND AT 11000 FT AND KORRY AT 10000 FT. WITHOUT GIVING US TIME TO ANSWER; HE ASKED IF WE COULD AT LEAST MAKE ROBINSVILLE VOR AT 10000 FT. WE ANSWERED 'YES' AND INCREASED OUR RATE OF DSCNT AND DID MAKE ROBINSVILLE AT 10000 FT BUT WE DID NOT MAKE BRAND AT 11000 FT OR KORRY AT 10000 FT. I THINK WE WERE A COUPLE THOUSAND (2000-3000 FT) HIGH AT BOTH POINTS. I THINK THIS ARR IS TOO TRICKY SINCE ALL THE INTXNS PRIOR TO BRAND ARE 'CROSS AT OR ABOVE' THEN AT THE LAST 15 MI THE INTXNS ARE 'CROSS AT...' WE ALSO HAD A HARD TIME DETERMINING THE DME WHERE KORRY IS SUPPOSED TO BE. THERE SHOULD BE AN ARROW POINTING FROM KORRY INTXN TO THE INFO BOX OUT TO THE SIDE OF THE ARR COURSE TO HELP BUSY PLTS RECOGNIZE THE EXPANDED VIEW OF KORRY AND ITS POS INFO. THE CHART IS TOO CLUTTERED AROUND THAT AREA TO BE EASILY READ IN BUSY SITS. SUPPLEMENTAL INFO FROM ACN 543588: CAPT (PNF) DID NOT HAVE ACFT LEVEL AT 10000 FT AT KORRY AS ASSIGNED. APPROX 2000 FT HIGH AT KORRY. HAVING READ FLT PLAN REMARK THAT BRAND IS NOW AT OR ABOVE 11000 FT (THIS IS THE 4TH FIX IN A ROW THAT IS AN AT-OR-ABOVE). I CONCENTRATED ON AT OR ABOVES. ALSO THE ATIS CALLED FOR A NON PRECISION APCH AT LGA WHICH REQUIRED EXTENSIVE BRIEFING TO INCLUDE OUR NEW PROCS. I DID NOT SUFFICIENTLY MONITOR PF IN THIS DSCNT. A SIGNIFICANT TAILWIND COUPLED WITH A CONFUSING AND VERY BUSY ARR AND A NON PRECISION APCH BRIEFING WITH NEW COMPANY PROCS; AND ME LETTING THE PF BRIEF AND FLY THE DSCNT WERE ALL FACTORS IN THIS INADVERTENT ALT MISS. I SHOULD HAVE FLOWN THE DSCNT IN THIS TIME COMPACTING SIT. IT WOULD BE HELPFUL TO HAVE AN APRON FROM THE BOX IN UPPER L OF ARR DEPICTION TO KORRY INTXN AS THIS PLATE TENDS TO BE FOLDED WHEN IN USE TO MAKE IT MORE COMPACT ON THE WINDOWSILL CLIP.