Random selection was always a teaser that gave travelers a taste of the good life. It's a sign of the program's success that they're not as frequent now.
This is what happens when a frontline of security is manned by temporary employees with zero loyalties to their employer. The TSA needs well-paid, full-time employees, not the kind of ex-mall cops contract work attracts.
Airport security lines may be a little slower if the DHS funding bill doesn't pass, but travelers shouldn't expect major, noticeable differences at airports.
If airlines and airports had adequate charging facilities for electronic devices then the new UK and U.S. rules on powering up electronic devices at security wouldn't be a big problem. As it is now, implementation and policies varies widely, leading to a ton of confusion.