I’m not seeing any difference in game play with Homeworld 1 vs Homeworld remastered game types. Yes, maybe some new options but Homeworld one rule set still has collectors, support craft the having to dock, formations breaking up, and research costing money. All of those are the remastered changes.
The only difference between them is whether you can use hw1/hw2 races in them or not. In other words it’s completely pointless.