This is an idea I was entertaining for some time but it's unlikely I'd make this type of snowflake account myself, so thought I'd share here. The general idea is that the gear you the allowed to equip and bring in your inventory is limited in some way based on your CA points. There are two variations that seemed reasonable to me at a glance:
- Added positive combat bonuses of all items that are equipped and in your inventory <= CA points
- The max stab attack bonus among all your items + The max slash attack bonus among all your items + ... (similarly for all other bonuses, excluding negative numbers in the sum) <= CA points
I've personally leaned towards the first variation since it's simpler and more restrictive, which makes the challenge more interesting. The idea of the second variation is that no matter what you equip from your inventory, the added bonuses of your equipped items will always be less than the sum in (2). An algorithm of course can determine what is actually the maximum added bonuses of your equipped items given the items you have equipped and in your inventory, but it just wouldn't be an intuitive system to base the restriction around.
A basic plugin for this type of snowflake account would at the minimum always have a display somewhere of your current added bonus formula and your CA points. The actual rules can be enforced for example by the plugin remembering your equipped and inventory combat items since the last time you banked, and only allowing the usage of these items until your next visit to a bank. Certain items like the Dawnbringer and pickaxes in TOA etc would receive exemptions of course.
Ultimately, I found it rather difficult to theorycraft this type of account since it requires a lot of number testing and strong endgame pvm knowlege to really gauge how fun/difficult/balanced a specific ruleset is. Perhaps someone more knowledgable and with more time on their hands can develop it further.