The big stumbling block. My basic suggestion to anyone would be:
1)LED colour washes( par cans/panels whatever)
2)One type only LED effect (Impossibled style)
3) Filament effects (Dynamos or similar)
This gives the best of both worlds, LED reliability, and filament variation. When more. bigger, and cheaper LED gobo effects hit the market (x-scan, x-move style ) it could be the end for filament lighting.