Personally i'd love to be able to land on a terraformed planet that i terraform (or another player). But we need allot more bio diversity. there aren't enough bio specimens currently to make a unique biosphere. One thing i'm thinking of is using the bio research module on carrier to 'create' new biology for the worlds we are terraforming/colonizing. Surely there is enough data gathered to do this.
Imagine a world like mars. You find it, scan it, plot the landing and colony zones, then contact the 'galaxy administration' for legal rights, then begin bringing down modules and equipment to form the first outpost. then bring down the workers in your passenger modules. Give them orders and they start building. While that happens, you go out collect the biologicals (not just scan) and bring them to the outpost or carrier bioresearch module. Thats when the plants start multiplying and you seed them all over the planet. Gather in seeds from other planets to make diversity. Gather newly created bioforms from the bioresearch module and seed those too. when the first outpost is completely built then upgrade it with terraforming module (making more trips for supplies and such) or make an atmosphere processing module that turns the toxic thin air into breathable (over a very long time). Go out to other stations and do the missions to bring in supplies, workers, colonists, etc.... When your first outpost is upgraded start on another... more out there the faster the terraforming and atmosphere reconditioning happens. create mining outposts to extract raw materials for selling to gain income. Purchase administrators of the outposts to have them keep going in your absence.
And that's just on planets that you want to 'convert' there are tons more that could use just mining operations, research, industry....etc.
There is just so much potential.
With enough time we could create a path all the way to colonia full of colonized worlds and mining settlements.