For the other strings, it is harder to say. Are you having issues now with it sounding muffled and cloudy or is it too bright? What I would recommend would depend on which issue you have.
It sounds like a high tension string like a pirastro evah pirazzi would be a less optimal choice. On the other end, a lower tension string such as an Obligato might sound muddy if the intrument already sounds muffled. Visions can clear up a muddy sound.
I don't know where you live but here in Minnesota it is very dry and this can also really affect an older instrument and make it sound muffled and muddy, like it has a cold. If you are not using a dampit or other humidification system, you could try that. If the pegs are slipping, that is a good clue that the instrument is dry. If there is a more moist and cool area in your house, you could try storing the violin there.
Remember that "everything" affects the sound -- including your own playing. If you haven't played in a while, sometimes it is harder to make the violin sound as good as you could when you were feeling more confident.
Also, if the person who played the instrument tended to play out of tune, this too can affect the ring of the sound years later and the instrument needs time to re-adjust.
So maybe you could tell me a little more about how the instrument is sounding now (other than the e string).
Incidentally, changing the e string could change the way the other strings play, so that might make a difference too.
