In recent times, I do have seen some good script turned into commercially viable cinema.

For e.g. if you get a chance to watch DASDHUNGA, dont miss it. Be it in cinema or DVD.
The movie is based upon Madan Bhandari's mysterious fatal accident.
Writer has so nicely pointed out various conspiracy theories regarding the incident.
loosely based upon Jim Carry's '23', the movie is once thrilling  experience with some good performance.

Also we need to cut some slack to nepali cinema.
Just because we are exposed to all kind of multi-million dollar cinemas we can be over judgemental towards couple million ruppees cinema. It doesn't seem logical for us.
Unless we appreciate even a small good work in Nepali cinema and start watching at least some of them, it will be hard for the industry to even sustain.

Luckily it seems both makers and audience have grown up. It doesn't matter if the director copies some bollywood, hollywood or korean movies. But the movie should be good and more importantly he/she should turn it into much better product with some due credits.
Nepali makers will never be able to pay royalties to international makers, so at least they could give credits to original makers instead of placing their names under STORY/SCRIPT.