I am now working for a few weeks with uecide and overall I see it as a good tool. Which doen't mean it is perfect!
First and foremost: The biggest issue for me by far is the serial terminal. More precisely the need to close it before uploading because of dual access to the serial port. This has resulted in truly numerous repeats. Arduino IDE allows at least to keep it open when you start a new compilation and Upload. Eclipse allows to seemingly keep it open permanently. Can't you just inactivate the terminal for the upload and activate it right after upload is complete? And if possible, integrate it into the main window, like a 3rd tab after "status", and "output"?
Editor Search Handling multiple tabs is convenient in uecide. But I have often found that I need to search something over all tabs, which is cumbersome right now. I even loaded the files in an external editor just to search though all files.
Upload speed Maximum is 921600, but new ESP32 kits allow speeds up to 3Mbaud and even 12MBaud (with the FTDI2232HL chip in the wrover kit). Since uecide is holding all libraries compiled, total compilation time now is smaller than upload time. Speeding up here would be appreciated!
Status and Output listing Colors like dark grey on black are hard to read, and despite the many config options, I see no way to change them. Font size should also be larger. In particular the Output fonts are way too small for my eyes! Your eyes may be better, but I have difficulties!
Project listing A great way to access all your components. But after clicking a few sources, the project listing space is cluttered with all the opened projects, and I need to close them all or scroll a lot. Suggestion: upon clicking the name of a source, only open the source in an editor tab. Only after clicking the '+'-sign unfold the source to show its functions in the project listing
Uploading files into the flash we discussed this already; maybe some time in the future ...
Manual Some kind of help to at least understand what things are supposed to mean and to do. Like Service Manager, minimalist mode, artistic style, copy settings, snippets, ...
Lastly imagine this being typed in tiny fonts only, but, are you satisfied with the uecide name? I first misread your phonetic transcription at the top of the page to say 'Jukaidi'. Perhaps such a Hawaiian sounding word is giving a hint?
Other than that, keep up the good work!