Their comments came as Scottish Justice Secretary Kenny MacAskill joined the speakers at a Rape Crisis conference in Glasgow, where changes to the justice system were discussed.
Mr MacAskill said the requirement for corroboration – two separate sources of evidence – could be scrapped as early as next year as the Scottish Government moves to modernise law north of the border.
But people who have been sexually abused said it was only a small step forward and that the whole justice system needed overhauled.
A 28-year-old woman from Glasgow, who revealed to the Evening Times last October how a Facebook confession helped convict Ugandan national John Ssewagudde of raping her, said she found the trial "as hard as the rape itself".
Ssewagudde was jailed for four years.
The woman said: "The main evidence in my case was Facebook, but they needed my friend's statement and other evidence too.
"It would have helped if the court had focused on quality rather than quantity. It would relieve the burden from victims.
"But it is only a stepping stone. The law needs to do a lot more to make sure justice is served."
Lord Carloway, Scotland's Lord Justice Clerk and the country's second most senior judge, recommended doing away with the requirement for corroboration in a review of Scots law and practice.
However, a number of High Court judges have rejected proposals to abolish the centuries-old requirement.
They said it provided a safeguard against miscarriages of justice and were particularly anxious about alleged sexual offences, where, they said, without corroboration the issue becomes one "of the complainer's word against the accused's".
Research by the Crown Office found 141 cases were reported to the National Sex Crimes Unit in the second half of 2010 where no proceedings were taken – and that 95 could have gone to trial if corroborative evidence was not needed.
But any legislation change is likely to affect only cases of abuse suffered after it becomes law.
Mr MacAskill said: "We hope to make this law certainly within our term of office. It will, more likely than not, be next year."
Assistant Chief Constable Malcolm Graham and Alison de Rollo, head of the National Sexual Crimes Unit, also spoke at the event.