For me, I don't feel like build something better than bare minimum even for now. I just have one design that gets modified a little bit every time for the contract, put the satellite for 10 second, and land it somewhere for the refund. If the satellite is taken from me, on the other hand, I think I would put some effort in designing it to get the most out of it. (i.e. get some research point / finish other mission along with it / use it as fuel station later)