I have been trying to find this to no avail. I was wondering if we will lose these each season since it seems like a rather large grind to get to the higher ranks.
No, it will not. Also, you will only be able to reach prestige 3 rank 50 (as far as I am aware). Meaning, for example, if you want all four artifact skins, you will have to wait until season 4.
No. It builds each season.
Working on my next ban.
I think each season gets a recolor of the pvp skin
Working on my next ban.
No, it won't. Would make no sense at all.