GSSR Berserker, Caster or Assassin ? and i got some friend spots open

Imo Caster or Berserker.

Caster is probably your weakest class but you already have Waver from the banner, so there is a risk to pull him again. If you don't mind the risk, go for this one.

Your assassins are pretty great imo, plus you already have Jeanne from the same banner. Again, theres the chance of getting a dupe.

The berserker banner will have all new servants for you but since you have Herc the need for an SSR berserker shouldn't be too high. Pick this if you want to be safe.

personally I don't think you have too bad of a setup honestly... id probably use the supper ce on jalter, and the k-scope on herc, and probably trade your sapphire for projection, lunchtime, or formal if applicable... (fine if not) but really not too shabby... 390 325 792 is my id... and im fairly well rounded... I have both a neatocris, zhuge, and a tamamo caster im trying to get lvl'd, and just pulled jack the ripper that I will be lvling soon, and my primary zerker is herc but also have lancelot as well... if this set helps you out send fr and ill accept I just rattled those off since those were the classes you were looking for btw... most of my support is either s tier 4 stars or s tier 5 stars where I have them... I also have a quetz that's in progress... most of my slots are going to be filled by 5 stars but about 4 or 5 are in progress... ive gotten like 4 s tier 5 star servants in a month so been kinda hectic trying to get some lvled up for support use... this is going to be my future setup if you like I sent a friend request

Go for Berserker coz a full SSR support setup would give u a very satisfying feeling. Plus you already have a good line up, so make no mistake, go for Berserker.

I added you, Tanaka with merlin