Its best time to start discussion about what will be in 4.4 version.
Features are ready for 4.4 :)
3753: Nivo slider - all Images are remove on change image with multi store
3659: Allow to delete previously entered addresses (during checkout)
4860: Added feature switch to have ability to have only 1 review per product from customer
Expected in 4.4 :)
228:Implement more general way to support third-party search providers (e.g Lucene, Apache Solr, Elastic, Azure Faceted)
4980: Performance optimization for catalog many products tags
5081: Rendering of the Top Menu is too slow
8: . Automatically update order totals when editing an order (configurable) Pending from 2016 :)
5012: Can't Build NopCommerce 4.3 on MacOS
Please vote and discuss adding these issues to NopCommerce 4.40 Roadmap.