Bigalt - The way the ET-2 is normally wired has always been an issue for me when deciding how best to mount it on my TT. Because the tonearm wires are soldered directly to the RCA jacks in the RCA box or mounting plate and the wire is supposed to be fed through a hole in the armboard to create a loop, installing or removing the spindle or manifold requires desoldering the wires and pulling them out of the hole. This is a major PITA and doesn't make installation an easy process.
The first post on this thread asked about wiring recommendations. Everyone here that has upgraded their wiring arrangement agrees the standard wiring setup is compromised. But lets also understand that everything is the way it is for a reason and to understand why this was done "wiring arrangement", one only need look at the objectives of the particular item in question. So lets take a couple of steps back for a minute.
For the ET2. At the front of the manual. PAGE 3
"It is a uniquely conceived tonearm, designed to be installed on turntables with universal mounts. It can be adapted to both solid mount (direct drive) turntables and spring suspended mount turntables. Its flexibility in many cases allows it to be mounted on many turntables without the need for special hardware. "
The above tells me that this Audio product is not something being made in limited quantities for a select market like many other Audio products. The purpose/objective here is to get it to the most people possible to enjoy it. Numbers sourced from Bruce and documented on this thread, show thousands made. When you distribute a product like this the wiring arrangement needs to satisfy many applications. That means some standard setup, compromises and all, need to be arrived at that satisfies most conditions. The standard wiring setup compromises the ET2 arm in two very different ways.
1) the number of solder connections
2) the wiring arrangement physically affecting the operation (movement) of the arm.
Not even Bruce himself uses the standard wiring arrangement as was clear in his 420 str cartridge review here. He goes straight into the preamp from the cartridge leads. My understanding is all professional reviewers listened to this arm with the standard wiring arrangement. Even in the standard compromised wiring arrangement the arm was very well reviewed.
Bigalt - In the end the important thing.... is that it is very good that you found a solution that works for you.....for now. :^)
For me from personal experience a happy face loop coming off the armtube works best. The full flat plinth presents more challenges to achieve this as you need to elevate the wiring to start; to allow for a happy face loop. The ET2 wiring is a natural for turntable setups that use armboards/pods that are elevated with the platter to allow for a natural happy face loop.