Do "Gummy Bear" implants get softer through the healing and settling process? (photos)

Thank you for the question and photographs.   Based on your pictures, I think you are starting at a great place and should have a very nice outcome with breast augmentation surgery. Frankly, I think you should do well with any type of breast implant; more important than the selection of specific type of breast implant will be selection of your plastic surgeon and careful communication of your goals. You are absolutely correct in that discussing goals in terms of bra size is too subjective.  
 Unfortunately, online consultants will not be able to provide you with specific enough advice (in regards to the best breast implant type/size/profile) to be truly helpful.
Generally speaking, the best online advice I can give to ladies who are considering breast augmentation surgery (regarding breast implant size/profile selection) is:
1. Concentrate on choosing your plastic surgeon carefully.  Concentrate on appropriate training, certification, and the ability of the plastic surgeon to achieve the results you are looking for. Ask to see lots of examples of his/her work.
2. Have a full discussion and communication regarding your desired goals  with your plastic surgeon. This communication will be critical in determining  breast implant size/type/profile will most likely help achieve your goals. 
In my practice, the use of photographs of “goal” pictures (and breasts that are too big or too small) is very helpful. I have found that the use of words such as  "natural” or "full C/small D cup" etc means different things to different people and therefore prove unhelpful.
 Again, as you know, cup size varies depending on him who makes the bra; therefore, discussing desired cup  size may also be inaccurate.
3.  Once you feel you have communicated your goals clearly,  allow your plastic surgeon to use his/her years of experience/judgment to choose the breast implant size/profile that will best meet your goals.  Again, in my practice, this decision is usually made during surgery ( after the use of temporary intraoperative sizers).
I hope this, and the attached link (dedicated to breast augmentation surgery concerns), helps.  Best wishes.

Appears as a yes. But best is IN PERSON opinions from boarded Plastic Surgeons vs over the internet guesses....