They get the tag of rejects because they sign unwanted out of favour players from other regions (this year Dan Evans, Prydie, Cudd, Liam Davies), surprised they didn't sign Gareth Owen. The Cardiff Blues are poor, when they played the Dragons is was a very low standard match. I was surprised that Dragons beat Edinburgh by that margin after some very ordinary performances prior to that, but after seeing Edinburgh's result against Saracens, something strange seems to have happened to that side.
The vast majority of the Dragons squad can be separated into 3 categories. The only exceptions are Lydiate, Faletau and Chavhanga. Most of the players who no longer fit in any of the categories leave such as Tovey, Gough, Owen etc. Lydiate and Faletau probably will too soon.
During the Paul Turner reign, there was also a fourth category you could fit their squad in - permanently crocked Kiwis.
Rejects from other regions:
Principality Premiership/RFU Championship standard players (average club player at best):
Kids (probably will end up in the Principality Premiership standard category, if not then will probably leave):