MCInsrAnalysis extansion

Hello, I'm using the MCInsrAnalysis and would like to extend it to have methods like:

* bool mayWritePC(MCInstr * Instr);
         returns true if Inst might write to the PC, i.e. might change the program flow

* uint64_t evaluateLoadAddress(MCInstr * Instr, uint64_t Addr, uint64_t Size);
         returns the address that Instr will load from if can be calculated

Does anyone have any thoughts or mind me doing this? Thanks