C414 FO COMMENTS THE NEW TWR THE FAA IS BUILDING AT CMH IS 50 FT ABOVE THE DECISION HT FOR ALL ILS APCHS.

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THIS WAS A NORMAL FLT UNTIL WE GOT TO THE BOTTOM OF THE ILS. APPARENTLY; THE RABBIT WAS NOT ON; AT LAST WE HAD TO MISS AND THE ACR BEHIND US DID TOO; THEN THEY STARTED TO GET IN AGAIN WHEN THE SUN WENT DOWN. THE CONCERN IS THE NEW CTL TWR; WHICH IS NOT YET COMMISSIONED. THE TWR IS BTWN THE RWYS; JUST BEYOND MID-FIELD FROM RWYS 10L/R. THE RWYS ARE (GUESSTIMATE) 1500-2000 FT APART. THE TOP OF THE TWR IS (GET THIS) 50 FT ABOVE THE DECISION HT FOR ALL 4 RWYS. ON MAR/SUN/02; I WAS THE GUY IN THE R SEAT; AND WHEN THERE WAS NO RWY TO BE FOUND; I RECOMMENDED MISSED APCH; WITH VIGOR; SINCE THE NEW CTL TWR WAS MIGHTY CLOSE. MY REASON FOR WRITING IS TO EXPRESS CONCERN OVER THE NEW TWR. I AM NOW; THANKFULLY; AN OLD CFI. YOU AND I KNOW HOW EASY IT IS TO MAKE A MISSED APCH AND NOT REALLY CLB ALL THAT MUCH FOR SEVERAL SECONDS. THE LOC BEAM GETS NARROWER AND THE WHOLE MIND SET MUST CHANGE ON A MISSED APCH; SO IT IS NOT AT ALL UNUSUAL TO SEE A DRIFTING TO THE L OR R. WORSE YET; SINGLE ENG ACFT HAVE A NATURAL L TURNING TENDENCY THAT IS EASILY FORGOTTEN AMID ALL THE NOISE AND CLB AND CHANGE OF PLANS. WHY ARE THE APCHS AT CMH STILL AT 200 FT WITH A TWR NEARBY AT 250 FT? I RECALL THERE ARE OBSTACLE LIMITS FOR VARIOUS CATEGORIES OF ACFT; BASED ON APCH SPD. I WOULD BE SURPRISED IF THIS TWR DOESN'T BUST CATEGORY A. SOMEBODY IS GOING TO HIT THAT CUMULO-CONCRETE IN THE CLOUDS; BUT IT IS NOT GOING TO BE ME. EITHER THE TWR WILL HAVE TO BE LOWERED OR THE APCHS WILL HAVE TO BE RAISED; WHICH IS NO FUN BECAUSE THE TWR SURE LOOKS GREAT TO ALL THE PAX; AND THE AIRLINES MIGHT NOT LIKE DIVERTING ALL THE TIME. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE TWR SUPVR STATED THE TWR HT IS 210 FT ABOVE THE ARPT. IT COMPLIES WITH ALL TERPS CRITERIA AND WILL NOT AFFECT THE MINIMUMS FOR THE ILS APCHS.