Whilst it is great for us to suggest what events these guys should play, they are mostly doing it (especially at this sort of ranking) to make money. He's got to take it whilst its there to fund the inevitable run in the Challengers that he will have coming up.
That's certainly a compelling reason as to why so many in that 90-120 ranking band enter every ATP event they possibly can - but Ebden attracts such scorn because he takes it to ridiculous extremes!
Most players recognise that dropping down to compete in Challengers is necessary to hold their ranking at that fringe ATP level. Matty never does...he just enters all these ATP events, loses in the first round of almost all of them, and then moans about travelling to all these far flung places to try and climb back up.
I'm sure he'll retire having earned a decent living thanks to that policy; but surely you'd rather be a consistent presence and not a 6 month wonder?