Isn't the mega prfox just a name for that type of coaster that Intamin made up.
And isn't also the hyper just a name that Arrow gave to their big coasters.
And I also thought that the names were as following:
>100 = kilo coaster
>200 = mega coaster (hyper coaster)
>300 = giga coaster
>400 = tera coaster (strata)
Cobra: yours looks really great, you should just change that tunnel into a shed or something and it wouldnt look as ugly.
Lord K: I think that the first drop should be a bit more rounded and steeper but apart from that I think it looks good.
I still have my projects on hold, but I have also made up some ideas for a new coaster.