Ruddock was the last Wales A coach and believes it is an ideal vehicle for helping to develop anyone seeking to take charge at full Test level.
He says Cardiff Blues coach Dai Young, Newport Gwent Dragons boss Paul Turner, Ospreys head coach Sean Holley and Scarlets boss Nigel Davies could hone their skills in charge of a national second string.
Ruddock, who is now in charge of Ireland Under 20, said: "There's great talent in Wales on the coaching front and the A team could be good vehicle to actually make sure that talent comes through.
"I think it would be fantastic if an A team got up and running. Obviously Ireland have an A team.
"They don't play a full programme, of course, because Wales and a couple of other sides don't run their A teams for financial reasons.
"But Ireland have made sure they've got two or three games in on the calendar and they've gone to the Churchill Cup, of course, as well and that's been a great development tool for them.
"I don't know whether Wales want to play a whole programme, but a couple of games could be good for them."
However, Ruddock says there could be difficulties in finding fixture slots for an A team and says not having the team during the formative years of the nation's regions was not necessarily a bad thing.
"I don't know if Wales have missed out, really, because the important thing was to bed in the regions.
"And I think that until the academies started to produce a number of players, which they are doing now, it would have been difficult to pick a senior team and play a Magners team and, say, play at Under 20 Under-21 internationals and fit the A team in on top - it would have been impossible.
"But whether you can do it around Magners weekends and run all the other teams is a question that perhaps the WRU needs to sit down and take a look at - and how or whether or not that will conflict with the regions.
"But certainly one or two A internationals, I would have thought, would be a positive move at the right times of the season."
