There is always room for more(!) bounty hunters, why should there be only one or two - see ESB, there were in fact nearly 10, ok not all had much screentime, but I think if one finds guys with well designed costumes, additional scenes can be inserted for a more logical plot ...

speaking of which, I too watched some TV lately, and again they showed the Indiana trilogy - taking me back to my idea/wish to alter the opending of RotJ and maybe that of Episode1:

every Indy movie has this pre-story (very like James Bond) - some in direct connection to the main-plot or just to introduce a new character (eg: Beloq)

so I would make the Jabba Palace/Han Rescue this sort of "mini" movie, before we really head to the real plot (and time pacing)

it could have happened some time before and Han is still unsure of his place and feelings (some kind of trauma), making him an uncertain ally - on the other hand we got Luke, he has finished his training, but will he withstand the temptation of the Dark Side or follow his fathers path?

for Episode1 a pre-story would be interesting too, because we don't have flashbacks in SW and told-historical events only, it would make sense, for the audience, to show a glimpse of what was before ...