Just a few ideas...
I'm not going to suggest Killer/Survivor balances here, but some ideas, I have.
A daily login system, where we get: 10k BP, 20k BP, 30k BP, 40k BP, 50k BP, 150 Shards, 300 Shards
A converter that converts bloodpoints into shards and viceversa. 400 BP = 1 Shard and 1 Shard = 350 BP (1 Shard = 75 BP with the current system)
SInce the ranks don't do much... Bonus for higher ranks. Brown = 0% bouns BP and XP, Yellow = 25%, Green = 50%, Purple =75% and Red = 100%
Complete rework for Shrine of Secrets. You can buy every Perk for 7500 or 9000 Shards and get a discount on 4 Perks every week.
Add-on crafting. 5 brown add-ons give 1 yellow, 5 yellow add-ons give 1 green and so on.
Killer and Survivor rotation. (Remove splinters) Every 2-3 weeks you can play one DLC Killer and Survivor from the rotation. You can level the Killer/Survivor up, but you can't get their teachable perks via the bloodweb.
Bonus for DC's. Every time one player DC's, every still playing player gets a 10% bonus on BP and XP, post trial.
Punishment for DC's. Punishing DC's is needed badly, so here an idea... now with the dedicated servers coming soon... a cooldown on matchmaking. The cooldowns would be 30m for 1 DC, 1 hour for 2, 2 hours for 3 and 24 hours for 4 DC's in a row.
Disabled chat for reported players. After multiple reports of toxicity, harassment and all that, chat disabled for that person.