Bad question (IMHO)
If it generally takes 10 to 12 man hours each month to support a given desk UI and there are now 3 different UI available, then that means there is now potentially a 30 to 36 man hour investment every month REQUIRED just to keep pace.
That is a ridiculous requirement to place on an all volunteer team. If they essentially loose a whole week on man hours to maintain the UI then suddenly the ability to move the rest of the project forward is gravely impacted.
If I were on the UI team, I would come up with the simplest to maintain method of displaying the contents and set a standard for it. Then if anyone wants to make their own mouse trap, they can in knowing that the basic tenants of the UI groups work will always look and feel the same.
This would allow essentially a version proof way for others to invest time into developing any fancy mouse trap of an interface they may want and know it is not likely to break on the next version change of the core system.
Don’t get me wrong here… I absolutely LOVE the old icon desk!!
But I would much rather have volunteer developer time optimized so that I can pay for the interface that I want with a paid developer and know that it will likely continue towork on every subsequent version upgrade.
Just my opinion (and you know what they say about opinions)
BKM