A track layout before construction is very handy to have for lighting locations and electrical receptacle locations. Plan on switching the bottom of all duplex receptacles so layout can be shut down at a central point where the lights are also switched off. Plan for in floor receptacles.
In the future you may wish for "people access bridges" instead of duckunders.
Consider 45 degree angles at table corners.
Try to visit existing layouts for the best of all worlds.
