LTT ACFT. RPTR CAPT CONSISTENTLY REFUSED TO FOLLOW ATC INSTRUCTIONS AND APPARENTLY DECIDED THAT; BECAUSE THE SYS WAS INEFFICIENT; HE WOULD FLY BY HIS OWN RULES; NOT ADHERING TO SPD REQUEST AND MAKING XING RESTRS. ATC PHONE FOLLOW UP WITH SUPVR AT CTR RESULTED IN PERSONAL CONFLICT.

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INBOUND TO LAS; I ASKED ZDV TO ASK ZLA IF WE COULD REMAIN HIGH (FL390) AS LONG AS POSSIBLE. ZDV CALLED US AND SAID ZLA WANTED US TO CROSS BCE AT FL310. THEN ZDV SWITCHED US TO ZLA AND LAX INSTRUCTED US TO CROSS BCE AT FL310. WE THEN REQUESTED TO STAY HIGH AS LONG AS POSSIBLE. ZLA THEN CONTINUED OUR DSCNT BY GIVING US XING RESTRS. THEY ASKED US TO MAINTAIN 310 KTS OR GREATER. WE TOLD THEM OUR MAX INDICATED AIRSPD WOULD BE 250 KTS. WE CONTINUED THE DSCNT AS PER THE ISSUED XING RESTRS. IN ORDER TO MAKE ONE RESTR (CROSS TO NE LAS AT 100) I HAD TO INCREASE MY RATE OF DSCNT TO 4000 FPM; BUT CROSSED THE DESIGNATE POINT AT THE CORRECT ALT. I THEN MENTIONED TO ATC HOW INEFFICIENT IT WAS TO DSND TO A LOW ALT SO FAR FROM THE LNDG ARPT AND THEN MAINTAIN A HIGH AIRSPD. I MENTIONED THE SYS HAD A DESIGN FLAW. UPON LNDG I WAS ASKED TO CALL THE ZLA SUPVR. I DID THIS AND THE SHIFT SUPVR REPRIMANDED ME FOR; 1) NOT MAKING VARIOUS XING RESTRS; 2) SLOWING OUR ACFT WITHOUT NOTIFYING ATC. BOTH OF THESE ALLEGATIONS WERE NOT TRUE. HE THEN TOLD ME IT WOULD BE VERY EXPENSIVE FOR ME IF HE VIOLATED ME. THERE IS NOTHING LIKE A THREAT FROM A GOV AGENCY TO CLR THE AIR. I PROCEEDED TO THANK THE SHIFT SUPVR FOR HIS TIME; EFFORT; KNOWLEDGE AND CONSIDERATION; WITH THIS OUR CONVERSATION ENDED.