3D Interconnect and neutral file formats

Hi, I've had a brief look at 2018 beta online. If I use 3d Interconnect function instead of import, it looks like errors that would normally be present are still there if import diagnostics are run. But if I leave as 3d interconnect, section view seems to work OK, I can assign a material and this seems to give a realistic mass. Is there any disadvantage to using 3D interconnect compared to import and fix?

This is an important function for my workplace, we import many supplier models and frequently have to deal with fixing import errors. If we could bypass all this with no downside it would be a huge time saver.

SolidworksSolidworks 2018 Beta