The following is from
this post with Questions from MaximGatling and Answers by Sporkfire.
[MaximGatling] Can you guys shed some light and/or dispel some rumors about Post-BR20 advancement plans?
Q1. Will there be a Battle Rank 21?
A1. Yes. And I am going to give you a whole bunch of information that could change at a moment's notice. This is simply where Design discussions stand right now. We are targeting the Summer to accomplish this, though don't take that as a firm timeframe yet (and there will be some other really cool stuff between now and then to get you through the wait).
Q2. Will there be defined 'Specialist' Classes we can pick? Specialist abilities or 'open-ended'-specialize-as-you-see-fit abilities?
A2. One of the concepts floating around in the post-BR20 discussions is Elite Abilities. That is, being able to do much cooler stuff than the certs you already have allow (such as barrel rolls for pilots, more hackable items, etc.)
Q3. Will a BR20+ character be any harder to kill before he reaches the equipment terminal than a BR1 character would? (a lot of people are worried about this one)
A3. As this design goes through, we'll try and stay away from that, though a marginally better chance of survival at higher levels is not out of the question yet.
Q4. Will there be additional equipment/uniform upgrades?
A4. Not sure yet. Art has not yet been determined.
Q5. Will exp be a factor and if so, will exp earned now be retroactive?
A5. Again, this is not hammered out in stone in the design.