The saw table I have is very accurate so I don't see that as an issue, Playfields will be laser cut so there is no accuracy issue with them at all as long as our files are correct 
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saws are accurate to a 1mm (teeth wearing / flex) but you could gain accumulated error and start to have issues - sure you will work it out.
curious how you will perform recessing for inserts, thread locks etc as a laser can't do that, but lasers are a awesome piece of gear and I made cnc routers & laser profile machines for 8 years so I am biased to using them as they can both do beautiful and fast accurate work.
