Onion v3 services are a lot safer than onion v2 services.
One of the main reasons why onion v3 services haven't seen much adoption by large scale sites is the missing support for onionbalance. This is about to change.
If you want to help test onionbalance for v3 onion services:
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!