Problem England have is that Jones has pretty much been decided on his squad for Japan for the last 3 years. Yes he's occasionally had to tinker, but overall he's been very consistent in who he has picked and called up similar players for injuries. Rapava-Ruskin and Hepburn are decent enough, but they lack experience at international level as do many players who come in as cover. Decent enough may not be good enough for international level especially a year out from the world cup.