Here I collected something about Curse vs FTB debate. I find attitude against Curse amusing
Curse ToS
Have you compared it with FTB's current documentation?
Note: yes, it's bad but changes have been promised. Source: core team members in #FTB@esper
Curse using too much resources
I've seen multiple bug reports complaining FTB launcher's memory usage. Currently unfixable unless some of the current features are dropped. Also dev team has been reluctant to drop logging features.
Do you have any numbers to do comparison between FTB launcher and Curse?
Curse's installation location
Installing things in C:\Users\<user>\AppData\Roaming\Curse Client seems to cause serious debates(wrong location for binaries and wasting precious SSD storage). Well FTB Launcher uses both %appdata%\ftblauncher\ and %localappdata%\ftblauncher\ FTB Launcher stores zipped modpack files in those folders(=~100 MB per pack). Why nobody mention that?
Location of Minecraft files
Both FTB Launcher and Curse's minecraft plugin offers option to change where minecraft instances are installed. I see zero problems here.
Personally I've been using Curse as long as I got alpha access, Better than FTB launcher. Curse still misses few features to for full feature parity as soon as those are added I'm happy with that and would recommend it for all.
Few notes:
Linux support: I do not count linux support as part of the feature parity. Curse Voice/client was never promised to be ported for linux. Solution to install packs in linux was promised. FTB Launcher is still being distributed and packs are being updated for FTB launcher => promise not fullfilled yet but packs are still playable with linux even Curse was *recommended* by core team.
Forced account creation/usage: *meh* Try collecting good list of users who refuse to create accounts and possible reasons. That thing should be handled in some other location than in news thread(Personal comment: I do not have forum powers and do not try to do back-seat moderation). Then ask slow/core team if they want alienate part of the users.
Friend sync hacks: I don't like things I read. Those hack looks awful. I would like to see Curse's comments/answers
Offline mode: does it work?
Whats been done at this point is basically forcing a whole new operating system that requires a new third party acct to use
Written in paste tense. Not true yet. I could not detect if that message included wrong unsourced facts or user's feeling. (I'll go with facts || And this is the reason why I asked source for the claim)
Like I said things might change in the future. Only core team and/or Curse knows about facts about future plans.