Good stuff tvb.

I have considered starting a new thread outlining the values with the OP being updated as needed but will start by making a few comments on yours.

Pulling from that location IMO is not a good idea. Better to pull from the actual code "use" than the notes field in init.cpp.
You can find the P2P_PORT in the coin's source code in the protocol.h file, it's the 2nd value after GetDefaultPort.

Again, pulling from that location IMO is not a good idea. Better to pull from the actual code "use" than the notes field in init.cpp.
You can find RPC_PORT in bitcoinrpc.cpp file, look for GetArg("-rpcport", xxxx), where xxxx is the port.

I understand why they want to do this for Litecoin and Bitcoin but for most alts I feel this setting is too high (or low depending on how you look at it). I think most smaller miners (which is what were really addressing here) would appreciate more consistent payments in smaller increments rather than fewer larger payments. I use DUST_THRESHOLD=1e8

Fewer (but larger) payments (I feel) puts off miners. Yes, it does increase the number of transactions in their wallet and may cost them more in fees when they try to use them but implementing coin control from newer litecoin releases can help there. They can also split up their transactions or wait for sufficient coin age.

Ok, those are my inputs.