FTB launcher not only does not require an account and being logged in, but I believe Curse actually requires itself to be running in the background.The FTB launcher is already a third party program.
Personally I would like to see them open source the current launcher. At the very least it will provide something for those who are on platforms unsupported by Curse.Slowpoke is taking the decision to move from the current dev model to Curse. Has anyone heard from the current launcher devs? Are they happy to be free of that burden?