Yes ASM already effect intraday margin too.
Intraday margin CO-BO-MIS all are calculated on percentage of (SPAN + Exposure both). Now new span goes up 2% for Nifty [from 5% to 7%] and for stock option it is 5% up min 12.5% plus exposure. So it will effect the intraday positions too.
Some sources said after 4% increase in Index Option writing margin Nifty writing margin will increase from 47k to 75k.
This will effect the liquidity obviously. Premium will go up also as option writers will demand more premium.
Brokers and exchange both are strict against networth or ITR based exposure.