Black/purple texture on illegal block/item data

UPDATED : Also happened on items too

Before 1.8, this BLOCK:DATA was cool that I can easily make new/modified block/item out of it. It was really easy that it just take at least 1 simple mod for this, MCPatcher or Optifine. Server plugin is to give the new/modified block/item some purpose like the example below.

Example :
1. Destroying on DANDELION:1 will explode using certain plugin
2. LONG_GRASS:3/4/5/# for new grass/bush(/tree?) for pot
3. Decoy ore which drop absolutely nothing (DIAMOND_ORE:1 with modified drop)
4. SMOOTH_BRICK:4 is a mossy cracked stone brick texture.

After 1.8, this stuff gone down hill and I can no longer make new/modified block/item out of it, only black/purple block/item and illegal data and removed the block/item if exist in world. It also sacrificed a lot of feature from my own server.

I really needed this thing back on the game, no restriction or limitation, it would be the modless and most server-sided only feature I will ever dream to make one. I would appreciate if you made meta data able to use over 15+ and customizable texture inside the Resource Pack by default like this :-

id : 1
data : 7
texture : basalt.png

id : 265
data : 1
texture : refinediron.png