I'd say my feedback is about as follows:
- I really don't like the idea that to play minecraft I have to login to/create another account (I suppose it uses the MCF account?), even if I'm not using any of the features whatsoever that should require an account (offline mode for the launcher itself, anyone?).
This one stands in line with most other people that like to keep their windows installation clean:
- setup.exe: why does every little app and tiny program these days want me to 'install' it? I don't want or need you putting things into my registry or whatever corner this particular installer is throwing things into, and I don't want you on my system drive . Custom install locations only half fixes this problem because the fact is, I don't know what and where the installer is putting things, but I can know where I unzip a 'portable' program and run it from.
Sadly, I suspect both of these are unlikely to change, nor are able to be changed at this point without 'significant' effort.
I'll probably end up using the launcher eventually anyway since I'll either be strong-armed into it so I can play the latest modpacks when the FTB launcher retires, or a few of these new features will outweigh the annoyances with conveniences. I'm not averse to downloading mods seperately and installing them manually, but see below.
While I'm not entirely 'qualified' to give feedback on the app itself (I uninstalled the beta the second it wouldn't let me past the login screen without logging in), I watched the dw20 video and beleive I would be very happy with the pack construction and editing system, It seems to have been done really well, although an add mods button wouldn't go amiss. Sure, you can copy and paste the mod into the mods folder, but really, after making a fully fledged and functioning modpack building system, why not add the one extra tiny button and make it feature complete? all it has to do is copy/paste a file. That and I bet you'll get questions from a whole bunch of players asking how to add x mod, because they don't know where the mods folder, or their instance, is.
Feature suggestion: I believe the curse modpacks use a sort of meta-file (manifest.json) to keep track of all the mods in a modpack, from the file all of the mods, hosted on curse, can be found and downloaded. It should be possible to 'export' a minecraft instance made with curse into one of the manifest files, and then send it to a friend so they can 'import' it, and get all the same mods, with all the same versions, without making a whole modpack just for a couple friends (basically sharing a pack with a couple of people without putting it on curse). Can that be done already, or is it planned? It would bring new glory to small server owners everywhere.