Can you use Source SDK as the most current engines?

Hello everyone! I was on vacation days thinking about whether it would be viable or possible to make a counter strike map in the style of today's game engines like Unity or Unreal.I mean creating maps with Source with models modulate themselves using static props and nothing else. Without touching the brushes at all.Is there any kind of limitation that will not let you do it this way?

Sorry for my english

Thanks for answering and giving your opinions!Another of my doubts:Many Web sites talk about the limitations of Source. Some say that at most on a level there may be 4096 objects between props and brushes.Others say that there is really no limit of props but that a limit of 8192 gives brushes.Can anyone remove doubts about this?Thank you!