The point of the new beam staff is to make the staves play more similarly to each other. The RMB of staves now all charge whilst holding, and launch a powerful attack with LMB.
I have played quite a lot of beam staff in VT1, as well as early beta VT2, and post-release VT2. In VT1, the beam was actually a very underrated, ridiculously powerful weapon. The speed of the LMB shotgun made it insanely safe. I usually refer to the beam staff as the “shotgun staff”, so changing the mechanics as they have, rightly changes the focus to the beam attack.
I would have to say that the mechanics of the new beam staff are very comfortable. I fully welcome the changes to what was my favorite weapon of VT1. Also, with the beam staff being so ridiculously powerful at the moment I’m not sure you can really justify asking for it to be made easier to use.
It really shouldn’t be a weapon that can be mastered after 2 games. LMB shotgun would make it an easy panic button and it’s already very versatile as it is.