Well, i dont support this rs2 shit.. But a real talk.. Range is useless in RSC at this point when u get 40 pray.. And its a pain in the ass to train. some buff's to range doesn't hurt...
I'm usually in support of rs2 additions (like equip tab) but I gotta agree that close-ranged combat doesn't and won't work on RSC.
What we should do instead is take a closer look at the lvl 40 prayer as you mentioned. On rs3, all of the protect prayers provide 50% protection - I think this would be a good balance for RSC as well for the lvl 40 prayer. The drain should be slightly lowered as well - should be somewhere between 30-45 instead of 60. To compliment this higher level prayers should be added, providing up to 80% protection but with the regular drain rate of 60.
From there we must determine how the "protection" will be programmed. Let's take the 50% for example - should every arrow hit you, but with the maximum hit reduced by 50% - or should there be a 50% chance of a given arrow shot missing you completely, with maximum damage still being theoretically possible?
Something to think about. It needs to happen. Training range SUCKS - and a lvl 40 prayer to disable it completely is an OP oversight from RSC that needs to be fixed.