Here's from I've learned from "online church:"
1). It began exciting and missional, but then it waned. I've always viewed online church as second-best. If you're sick, homebound, you're at work Sunday mornings, you're on an airplane - it's there if you physically can't come to the sanctuary. I believe COVID has changed the attitudes of worship. The doctrine of worship needs to be preached and taught among believers. Online worship shouldn't be a believer's primary worship experience.
I'm seeing many believers who want to worship on their schedules. They might tune in Sunday mornings, but if something's going on, they'll choose to worship Monday or Thursday evening and listen to the podcast. It's extremely consumer-driven and can be dangerous. In Acts 20:7, the early church met on the first day of the week, this is Sunday, the day Christ rose from the dead. Jesus didn't rise on Tuesday, He rose on Sunday. Every Sunday is an Easter celebration. You're remembering the first day of the week that Christ is alive.
2). Age-group ministries, such as children, youth & collegiate can't be tied to public school systems and universities. If churches are waiting to "return to normal" with public schools and colleges, then the school administration or state governor is setting the schedule for a church's ministry. What if the school year for 2020-2021 is 100% online?
The way to avoid this is to pivot from age-group ministries to connection, community life, family and missional living ministries. It's a model that continues to minister to all age groups, but a minister isn't stuck in one lane - and government has less influence on scheduling.
3). Telephone and snail-mail ministry is appreciated. Folks stuck at home have enjoyed a call or card. A note of encouragement carries meaning - let the mailman bring others a blessing. Our children love receiving mail and answering the landline. If you can't see people "in person" you can stay connected without being online. Ministry leaders should be taking extra time on the phone and mailing notes of encouragement.