I've thought about olive pythons, but they seem to be much harder to find than burms and retics.
I'm definitely leaning towards getting a morph rather than a normal, but that's more because of the added appeal of the colors and pattern rather than making for easier rehoming (and I will avoid rehoming it at all costs); I was thinking of getting any albino, but I know that there are a ton of other cool morphs out there that I have yet to look into in depth. I've considered dwarfs or super dwarfs, but, based on what I've read, they tend to be much more flightier and/or more likely to bite than a standard-sized burm or retic.