As
@SeriousHoax said, Fanboys can be used in
uBO. Why use
ABP?
You can handle main functionality of
CookieAutoDelete and
I Don't Care About Cookies (using Annoyance filters),
ClearURLs (using Stealth mode config) with
Adguard extension.
Decentraleyes can be replaced by other extensions in use and their filters.
Blocking font detection in
BP Privacy Block All Font and Glyph Detection can be handled by
ScriptSafe font anti-fingerprinting (only <canvas> though, not JS...). Is it anyway necessary?
Preventing keyboard behavioral profiling done by
Keyboard Privacy can be achieved with
ScriptSafe's. Is it buggy?
Detect Zero-Width Characters already does what
Zwblocker does, perhaps more.
You can use
anonymizing browser flag or
Adguard to do what
WebRTC Control tries to achieve.
WebRTC Control blocks multiple components, though the outcome is equivalent.
You can spoof the user-agent in
ScriptSafe itself instead of using a dedicated extension like
Random User-Agent.
Somethings you're trying to achieve look unnecessary to me. Also you're installing "one more extension for that" just to get a little more of something.
I am not saying that all of these can be exactly replaced. However the trade-off is worth it IMO. Minimal yet sufficient.
I believe you know that the attack surface increased (internal & external of the extension) as a result of adding more and more is not generally worth it. Having a huge trawl net does not mean that you collect tons of different fishes on the boat at the same time