I daresay that most reasonably well-funded medical research would become almost entirely obsolete if SENS were to work. It's hard to justify researching more effective heart attack medication when no one gets biologically old enough for heart attacks to be a serious problem anymore.
Doesn't that depend on heart attacks being a function of age rather than a function of time? Anti-aging doesn't necessarily mean anti-arterial-plaque-buildup. I do agree that entire classes of problems might go away though, which would be amazing.
I have just received a survey questionnaire regarding future directions in EU (European Union) research funding, and thought it would be interesting to see how LessWrong would answer the main question:
Imagine that EU funding is available for one ambitious, visionary project extending beyond 2020.