Jas,
Technically it is possible.
I took G4 in the maps and each place it said "G4" I put in 99
take a look:
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SIT 003-99,099.0,5000,U4,C,-060,V,0030,H,24,10,c0,00,0001; data:10031388 ffc4001e 00010303 de17c000
003-99,00001,0,1,1,0,03479,001,00000,0,80,H,1430000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00002,0,1,1,0,00000,002,00000,0,80,V,1410000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00003,0,1,1,0,00000,003,00000,0,80,H,1390000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00004,0,1,1,0,00000,004,00000,0,80,V,1370000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00005,0,1,1,0,00000,005,00000,0,80,H,1350000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00006,0,1,1,0,00000,006,00000,0,80,V,1330000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00007,0,1,1,0,00000,007,00000,0,80,H,1310000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00008,0,1,1,0,03479,008,00000,0,80,V,1290000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00009,0,1,1,0,00000,009,00000,0,80,H,1270000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00010,0,1,1,0,00000,010,00000,0,80,V,1250000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00011,0,1,1,0,00000,011,00000,0,80,H,1230000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00012,0,1,1,0,00000,012,00000,0,80,V,1210000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00013,0,1,1,0,03479,013,00000,0,80,H,1190000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00014,0,1,1,0,03479,014,00000,0,80,V,1170000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00015,0,1,1,0,00000,015,00000,0,80,H,1150000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00016,0,1,1,0,03479,016,00000,0,80,V,1130000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00017,0,1,1,0,03479,017,00000,0,80,H,1110000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00018,0,1,1,0,03479,018,00000,0,80,V,1090000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00019,0,1,1,0,00000,019,00000,0,80,H,1070000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00020,0,1,1,0,00000,020,00000,0,80,V,1050000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00021,0,1,1,0,00000,021,00000,0,80,H,1030000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00022,0,1,1,0,00000,022,00000,0,80,V,1010000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00023,0,1,1,0,00000,023,00000,0,80,H,0990000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00024,0,1,1,0,00000,024,00000,0,80,V,0970000,0,1,1,0,1,6.20,6.80,NTSC,10,003
003-99,00955,0,1,1,0,00000,045,00000,1,80,H,1150000,0,1,0,0,1,6.48,7.30,NTSC,10,003
003-99,00956,0,1,1,0,00000,046,00000,1,80,H,1150000,0,1,0,0,0,7.43,7.43,NTSC,10,003
003-99,00958,0,1,1,0,00000,048,00000,1,80,H,1150000,0,1,0,0,0,7.62,7.62,NTSC,10,003
003-99,00960,0,1,1,0,00000,050,00000,1,80,H,1150000,0,1,0,0,0,7.82,7.82,NTSC,10,003
;
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I ran it through the map restoration program and it came up as 99
I did not put it in my receiver to see how I would go about just pressing 99 on my remote as I "think" the remote is programmed to see a letter first. Not 100% sure on this but in theory your suggestion may work.
However;
while it may work you could go to 1 Dc2 channel and your maps may change on you and you lose your number on the sat you are on at that time.
Say you had 05 for 105 I believe it would be overwritten on you as would M5 and several other satellites that are transmitting data on them if you go to certain Dc2 channels.
Now, with that said, if you want to go through all the energy to attempt this please try it out and report back your progress.
It is possible it could work.
To remember things though I strongly suggest you download the satellite icon guide posted on the web page as this makes things much easier to remember.
I can see using this type of system on a receiver with a bad unit id number where someone wants a dish mover again.
Then I would say to replace the battery, throw in a set of total analog mappings (no DC2) and use the dish as dish mover only and this would work 100% by using the sat position numbers as long as you got used to the remote part of things!
Now if you want to then do this and I will test it out.
Download the #9 maps on the webpage.
Carefully go through and replace the letters on all satellites to the numbers you want and save it.
Then pm me and I'll give you an email address to send it to and I will put it into one of my bench receivers here to see if it will work.
However you will have to make those changes first.
And I will reply back with all the particulars.