1-  Heller is not a retard or dumb person to nt have a satisfactory ending
2-  If he cant give u all 20 closures on the RJ thingie like his being a Jane-like person, charismatic, tea drinker, barn in 1980s, rosalind harker and all, he may still cud have given 5.
3-  But he chose not to give even 1 - tht is a statement and not due to time constraints or creativity constraints
4-  He made it a point to show RJ as a dumb-ass. PJ commented "I am a lil disappointed". He made it a point to show tht RJ was a afraid person. He was a coward. 

These are facts and not assumptions or assertions. Where do they lead us?

IMHO Heller decided that he was not gonna showcase RJ as a big deal. Of-course he got this thinking only towards the time when the reveal was imminent. Earlier, he wanted to glorify him. Now, I may be inclined to think that in the ensuing 5 months he might have thought and thought again and may change his mind if the theories here who say RJ would be resurrected are to be believed. 

The only thing that is important here right now is that whether these ppl have a will to keep the show going for 1 more season. It will be a shame really as it is/was such a great show.