I am a newbie in c64 coding and I had never heard of CRT or easy flash :) Thanks for bringing these into my attention. Having a lot of extra ram is a tempting idea, but it would require an overhaul in the codebase. i.e. it's not currently planned, but i'll keep it in mind.
a .crt file is just a C64 cartridge ROM - it allows you to go down the multiload / disc access route, but you're reading from a cartridge ROM (or emulated version of one) so it's much faster than reading from disc, that's all :)
