My disagreements with the Eve launcher (which is the part I will also post in the launcher specific feedback topic, don't worry) and suggestions for improvement are:

1. Every now and then (yet rarely) forgetting my accounts / checking for character name.
2. Almost always forgetting every account except the first account whenever I log in to sisi with only one and the same account.
3. The lack of auto-patching. Why do I even have to close the launcher again to reboot it in order to apply a patch? This is facepalmworthy.
4. Sometimes after a downtime I have to reboot the launcher even if there was no patch applied, as I'm getting a "unable to establish connection" on the game screen. Intriguing.
5. The fact it requires CPU resources and memory far beyond what I would think any launcher product of similar size, look and functionality should have. A few examples: Planetside 2 Launcher: takes about a third of memory, and uses so little CPU it doesn't even hiccup into the 01% category after it has been launched. Warframe: uses about half the memory but given the animated nature of it, CPU usage hovers around 01% to 02%. Champions online: Never saw it above 0% CPU when idle, and also takes only a third of the memory footprint. These launchers also never spike when idle (I kept programs running to monitor CPU usage). The highest spike I ever encountered on Eve launcer: Thirteen Percent. I could name you more launchers, but they all fall under the same category. Less CPU usage, less memory usage.
6. I don't get a notification for a fresh news entry nor anything else. It just sits there and is silent.
7. It's not the slowest launcher but definitely also not the fastest. Exefile has always been the fastest, no matter which iteration of the launcher we're talking about.
8. The launcher does not provide any faster way of relogging characters so there is no reason to use it speed-wise over the "log-off" function of the eve client.

Other than that, I had not the misfortune of other pilots like endless patching, reinstalling or launcher crashing.