When we talk about being desperate, then I’d wish for something that could solve everything. Yeah, that desperate.
Give me ten seconds to think of something to wish for and I’d tell you that I want to control time in all its aspects — even in relativity. This would mean that time would be exactly how The Doctor would describe it: a big ball of wibbley, wobbley, timey wimey stuff — except I wouldn’t need a Tardis for it.
In this sense as well, I could be like Superman or Metroman, moving extremely fast that everything else would slow down, and I could have other people or situations under my control, speeding up, slowing down, or stopping time altogether for any exact thing that it affects.
So basically, yes, to control time.
Because controlling time can lead to controlling situations. Controlling outcomes. Procrastination. Observations.
To deletions and to starting over.