The main issue I see here is that we don’t have a final product, but a group of testing enthusiasts either runing a ‘standard Maslow’ that is well documented, or tuning and testing a huge diversity of frame, sled and z-axis modifications. Just take the 4 chain mounting options for example (brackets and 3 triangular systems). We don’t have the statistics to give a recommendation on which of the 3 chain-mounts performs best.
The frames on a fixed ‘standard’ machines is tilted 15°, but we only assume that this is near the the ‘best angle’ and that will vary with the weight of the sled. Top vs. side slack-chain management etc. etc…
We would need a cross-globe inquiry with a group of testers supplying first all machine data and then running the same test-cut to gather the data that is needed to develop a recommendation first.
If you are not a tweaker and tuner a ‘general recommendation’ would be go with a frame of your preference and make a rock solid (no flex) top beam for the motors. A wider ~ 12foot seems to be accepted as better.
For the sled go with the documentation that is up.
All of the contributes are voluntary doing the great work for the community in their spare time.
Development has been so fast and interesting, that the documentation fell behind and spreading out into different approaches has not made the update job easier.
The best source (my opinion) is currently here:
Volunteers to clean up the outdated stuff (github) and add the missing are always welcome! The Wiki is editable for everyone.