Random ideas from the peanut gallery:
Always welcome

Geneticist: Does what you described for giving better genetic material. (Better stats and traits?)
Mind Wiping : The dark side of cloning, sorta.
I was thinking to do these as skills: genetics and neurology. Could have traits with a points bonus, I suppose, but I was planning on giving the player some points to spread around when his or her profile was created, so there wouldn't be much point.
Basically, you're going to start off with some genetic templates - digitised dna sequences stored on computer, and some neural engrams, which provide basic motor skills, language and a few customisable options. The initial templates are going to be pretty low grade. Sex drive hard coded to the max, obedience will be medium-high, but other stats will be pretty low.
When the PC makes a clone, he gets some points to customise the girl's stats, and the better his genetics skills, the more points he gets to add. He can also push over that limit although there's a cost both in the time it takes the clone to "cook", and in the chance of something going wrong, with consequences ranging from unexpected negative traits to a "stillborn" clone, through to damage to the equipment.
You could have good traits to speed up the cloning process, or reduce the consequences of failure. (or maybe speed it up a lot, but aggravate the consequences of failure)
As the game goes on the player is going to get chances to make his own templates (the better his skills, they better the template) and get new ones from various sources. In general, the better the stats, the harder it's going to be to control the clone.
Why bother growing them when you can just grab people off the street, wipe there memory and reprogram them. Same points of interest as BMGT. Easy to skill up, cheaper to implement. (less time consuming) But run the risk of Arrest or being shot and the end product isn't as good. (Randomly remembers their past life)
Well, there aren't going to be a lot of women around. The setting is the asteroid belt and outer solar system. Most of it is pretty rough and ready, and historically, that's tended to mean a high male to female ratio. So there aren't many women around, and the ones that have braved the hazards of the outer system tend to have a lot of very protective men watching out for them. So it's not quite as simple to grab a woman off the streets as it is in WM. (That's not to say it isn't possible, but its going to need a bit more work to make it happen

But yeah, artificial personality constructs are never a patch on the real things.
BMGT: (Black Market Genetics Trade) Kinda like geneticist skill but not as high quality, easier to level up and brings lots of heat down on you. Also cheaper. The skill would involve being able to find contacts and work out prices all while not getting arrested|shot.
I like it, but I'm not sure it would fit very well. It's a big city perk in a low population density setting. There are a couple of "cities", but I don't think the PC is going to spend enough time there to make it worth his while. Still it's a thought.