I think you would end up with a tiny platform whose hub is filled with cargo bays.If platforms would instead intelligently know to request and construct its Cargo Bays, then you can be certain that it will have plenty of inventory space available to also accommodate the other requested building materials, and you could have materials be sent up in advance, or copy and paste an entire platform easily, confident that it will prioritize fulfilling the construction requests it needs to be able to accommodate the other materials in its inventory first, so that there is no chance rockets will stall waiting for room in the platform, or dump things all over the platform.
The original suggestion was just to request the "auto-construction" request before the regular "logistic" request. It seem more logical to me but doesn't pretend it's going to save players from every mistake they can make !
It's still possible in game to make an intelligent system though as mentionned earlier :
There is an automated way to avoid deadlock currently in the game, it may not be as fitting to personnal preferences as what all the different suggestions proposes. But in case none are implemented and this is still a problem for a player, having 2 silos, not in "automatic request", yet loaded with inserters to be filled with platform tiles and the other with cargo bay. "Pre-loaded" if you will. This way, any large blueprint that a player attempt to paste that would start requesting material from a planet would receive as first shipment, platform tiles, and cargo bays. This is because the other silos will require a little time to receive the other constructoin material brought by robots before launching, whereas a silo that as a rocket ready and filled with material like platform tile will auto-launch immediatly during that time, thus arriving first.
