Master Palette and TAB

@cadiz1...I may be getting slightly off topic, but...

I, as other MuseScorers, am still 'learning the ropes' when it comes to the betas/nightlies.
Speaking for myself, I was thrilled when it was announced that TAB (both linked and unlinked - more about this later) would be a new feature. Like most people familiar with TABs, I've noticed the different styles out there and I imagined this would present a problem. So, I was duly impressed when I discovered TAB choices - simple, common, full - as a solution.

Not only TAB... but *linked* TAB...huzzah!
Frankly, I'd have never thought about linking a notation staff with a TAB staff. I figured I'd just enter the notes in the treble clef, and then go back and enter the fret numbers on the strings in TAB. The developers of MuseScore, however, are fearless; and so they went with linked staves.

Linking staves is a tremendous undertaking - as evidenced here:
1. 'Redundant' L.H. (left hand) fingering numbers appearing in both staves which make the TAB confusing.
http://musescore.org/en/node/32966
http://musescore.org/en/node/33006#comment-139021

Concerning the above: My personal preference is that for linked treble/TAB staves, L.H. (left hand) fingering should *not* display in linked TAB by default. As bbguitar mentioned (in the second link above):
'Just as a notation reader might refer to the tab staff for clarification as to where to play a note or chord, so the tab reader could refer to the fingering on the pitch staff for fingering should it be necessary.'
For me, being primarily a notation reader, I do sometimes rely on TAB (if available) whenever the string/fret number is unspecified in the treble notation, and the TAB staff provides better instruction.

2. String numbers - I believe that string numbers need *not* be propagated from the treble staff to linked TAB; because, by its very nature, the TAB already shows the string. As a matter of fact, it shows *all* the strings *all* the time, so there can be no doubt upon which string a fret number sits.

(Regarding 1 & 2 above, of course I understand that unlinked staves can be chosen - but that choice allows for nothing at all to be entered into TAB while notes are entered into the treble staff. Because of this, I have on occasion created both a linked TAB and an unlinked TAB, then copy/pasted from the linked TAB into the unlinked TAB. This way, the unlinked TAB can be used to delete items without affecting the treble staff. Upon finalizing the score, the linked TAB can be deleted.

3. Linked TAB is mapped only to first position playing on the guitar neck. See:
http://musescore.org/en/node/35446#comment-153091
which shows an A minor scale played at the 5th fret.
It can be done using linked staves, but the TAB tuning must be set as if there is a capo at the 5th fret. (This works strictly for scale exercises and position playing.)

4. Guitar (especially electric guitar) technique symbols: hammer-ons, pull-offs, slides, etc. You have already mentioned the existence of workarounds. (I notice a full bend in the Articulations & Ornaments section of the Master Palette - I'm sure others will follow. Heck, there's a 'Klaxon horn' symbol, so why not a few more.)

Now, concerning chord diagrams:
I agree, as you wrote, that there are: 'countless songbooks for voice, piano accompaniment, and with guitar diagrams above the standard staff (for voice).'
I also agree that chord symbols are not used exclusively for guitar scores, or only in TAB. (By the way, TAB, of course, may generally be used for any stringed/fretted instrument - not just guitar.)
However, those chord diagrams that are commonly found in generic songbook style scores for piano/voice *are* specific to guitar. So, while I agree that the chord diagram facility in MuseScore should allow for a 'barré glyph', rather than a hacked 'Laissez vibrer' symbol, I won't be disappointed if MuseScore 2 is released without it - popular as guitar chord symbols are in the general publications.

After all, there are ocarina, bagpipe, piano (et al) players - in addition to the 'figured bass people', chomping at the bit to get their hands on a stable release candidate for 2.0 - before it gets burned from too much time in the oven!

Regards.

BTW: The 'Laissez vibrer' symbol can be added to the Symbols Palette (in a new workspace). This way, it is always available for reuse should the need arise.
See my attachment above (Chord diagram.png.) and note the Symbols palette.
I know, it's a workaround. :-)