SCBs are the devil's work. They weren't necessary to add in the first place, and have degraded both PvP and PvE gameplay.
They have propagated the mindset where players are super special in the galaxy. Why don't all decent NPC assassination targets and out-and-out murderous NPC pirates have ten cells to spam? By rights, they should... but players are special, right? We can't have NPCs using cheap, efficient and obviously effective loadouts...
To my mind, SCBs CREATE players exclusively focused on player-killing.
Here's why...
Q: Do you think you might attack and try to kill another player?
NO -> Fit out a "non player killer" ship... which is basically anything other than carrying a full rack of SCBs.
YES -> Create a "player killer" ship - fit as many SCBs as possible.
Q: I'm flying a "non player killer ship". What should I do in this game?
A: Lots of stuff, except for fighting other players. I can dabble in exploration, smuggle, fight off NPC pirates, trade in rares or in regular goods, pirate NPCs, bounty hunt NPCs, etc. But stay the hell away from other players.
Q: I'm flying a "player killer" ship. What should I do in this game.
A: Kill players.
Q: I'm flying a player killer ship, but just got killed by another pilot in his player killer ship who had one more SCB than me. What should I do with the token 8t cargo rack I foolishly retained for "RP pirating" or picking up special things I come across?
A: Ditch the 8 tonnes of cargo space and fit another SCB, of course. Specialise more. Discard anything not absolutely focused on player killing.
Q: 95% of players just avoid me in my player-killer ship. The 5% that don't avoid me all fly player-killer ships in wings of 4, and kill me. What do I do?
A: Wing up with three other like-minded, fully specialised player-killer ship pilots.
Q: Me and my three friends wanted to have fun playing Elite, but all we do is fly around in a wing of player-killer ships, looking for other player-killers. This is getting really boring when there are no gudfites, which is most of the time. Why is this game boring?
A: Because you are flying in a specialised wing of player-killer ships in a game that is honestly not built around PvP gudfites, and your ships cannot do anything particularly well except kill other players. And if you DO get in a good fight, your shield cells are the key to victory... and you just used some up. So EVERY fight is quickly followed by a trip back to buy some more, before you are back to full player-killer effectiveness. God knows, you wouldn't want to meet other specialised player-killers with only 50% of your cells remaining.
You're bored because your entire game has shrunk down to a very small and repetitive gameplay style, with a very limited loadout flexibility, probably in a small number of systems, and probably fighting against a very small number of like-minded, and similarly specialised, players.
Q: I'm getting seriously bored and frustrated now with Elite, in my 100% player-killer focused ship, with my 100% player-killer focused in-game friends. What's to stop me making life "interesting" and injecting some hilarious forum drama by just going ape, and killing every player I see?
A: Technically nothing. Don't forget to bait, goad and annoy people with comments about "salty tears", "care bears" and such. Perhaps some people will grow a pair and actually challenge you in battle if you kill enough Haulers, Sidewinders and Type 6 in systems where newer players congregate!
Q: Why am I seeing fewer and fewer people in Open Play these days?
A: No idea. Honest. No idea at all.