I'd include all .frqs with a bank. I've never seen one that didn't, it'd be weird to download a bank where you have to generate everything for just the basic resampler.
Yeah, I'm considering installing Windows too just so I can use UTAU properly again and Paint Tool Sai. photoshop got nothing on paint tool sai sob i miss you~ I don't know how though and if I have to install antivirus ASAP or something though so I haven't gotten around to it yet. :'D
UTAU-Synth is buggy beyond belief, is barely compatable with UTAU-PC so any UTAUs and USTs created with it will have problems, you can't use ANY plugins or resamplers, loads of voicebanks just flat out don't work, you can't fix frq's generated in it, it just crashes whenever it wants to and doesn't let you recover your work… Seriously, only use it if you absolutely have to like I do for now. It is usable, but it is 1000x inferior to the PC version.