I wouldn't say it comes out of lazyness from the FE developers. It's more about lack of understanding of the consequences this approach might have. The effect is being more noticed recently, with more people trying to play TTL games. I personally had no clue this was an issue until someone mentioned that a TTL game he wanted to play was not being added to the FE. Of all formats exported by Lightspeed, I believe only two FEs require the .zip info to run the games. I'll try to contact those developers and see what happens