I don’t think the best way to balance the MER is to stop people ratting/mining, it’s an activity people enjoy and it makes for a lot of subs (I personally have 3 accounts unsubbed at present because I am no longer able to use them - all rorq/cap pilots). Revert the blackout and cyno changes to bring back our pve krabbing alts and instead balance the MER through isk sinks.
From memory the sinks vs faucets used to be inflating by around half a tril, reverting the cyno changes may make this happen again. A quick way to balance this almost immediately would be to make the faction capitals purchasable for liquid isk. Molok for 200b, vendetta for 100b and so on. Each faction cap purchased is an immediate large isk sink.
Other sinks could work such as higher repair prices, skins available for isk only, a new ship line or modules which can only be purchased with isk.
Don’t punish those who like to krab, quite the opposite, feed them new pve content, but balance it with sinks. You’re not going to grow by ostracizing a core part of your playerbase.