So I've started from the beginning (BG1 parts) and most obvious things - BoneHill mod that is very good but desperately needed to be refined a little keeping in mind all those strange looking 100% "transparent" walls, cloned background patterns, "all-black" shadows etc.
So, here it is - BH refinements that include:
- 2 .tis's for the most graphically "problematic" areas BH0100 and BH0200 (at least a lighthouse HAS a shadow now

- fixed walls regions for all custom-made areas,
- fixed auxillary maps (light, search and height) for all custom-made areas,
- fixed or redrawn minimaps (there were several corrupted or "waterless" .mos's).
I hope this will be usefull...

I haven't touched anything from scripts, dialogs etc. - only visual aspects...
http://www.risingforce.ru/fix/bh.rar