But you can't fall under the trap of keeping Bitcoin Core as a super limited software with basic features forever if you want to give people an incentive to run full nodes. Sure, it should stay basic and extremely solid, but make it more usable and user friendly as well.
AFAIK franky1 has nothing to do with the development of Bitcoin Core (yet). We'd love to have more features (and actually there are many very advanced features that are not available most other places... there just are not as many "middle tier" features), but people need to step up and contribute. Most of us are completely saturated just keeping the with the increasing demands on the network.
You can use Bitcoin Core offline-- I do and have for years. It's just not super user friendly to do that.