SOHO was getting a bit long in the tooth
If it's still running.
This is a superb mission. Hard science which will have definite and immedate applications on Earth. It will give early warning of upcoming large solar storms (although what happens will depend on what precautions have been planned for. Finding a way to partition the power grid into sub sections seems to be pretty important) and with this much detail it *might* improve the modelling of magnetic confinement fusion reactors. The Sun is the *only* working fusion reactor we know about that we have *any* kind of access to.
The fact that a very complex object is being obbserved in much greater temporal and spatial resolution alone should generate substantial discoveries.
I hope tha NASA puts in place arrangements (possibly as part of an international consortium) to maintain some kind of permanent satellite watch on the sun.