Here's the original mod without my personal touches http://www.bay12forums.com/smf/index.php?topic=117954.0 This was repacked for my lazy friends.

Super brief description
A lot of items are standardized so there's less clutter. Invaders and diplomats come with less clothes. Aquifers are off.
I put in the mayday texture pack because it's awesome.
It comes with a settings program to mess with Init files and FPS. Also dfhack.
Dragons grow super fast.
Also children will grow into adults at age 5 or so.




Full Changelog for Accelerated DF/ Modest Mod
##### WHAT CHANGED ? #####
- Standardized grass
- Pandas eat grass instead of bamboo
- Standardized wood (nether caps are the exception)
- Less stones types
- Several stone types leave only dust, no solid stone
- Only one type of sand, soil and two clays (one earthenware, a second one for stoneware)
- Aquifers removed
- Reduntant domestic animals removed
- Reduntant gems removes, about 70% less
- Less clothing types
- Less clothing worn by traders and invaders
- Standardized toys and instruments
- Standardized animal materials, including bones, leather and meat
- All adv worldgens produce wide, open caverns to help pathfinding (no more mazelike caverns)
- Removed billon, electrum, and the 3 pewters versions
- Init tweaks for more FPS
- Initial FPS cap set to 150
- Weather and Temperature OFF by default
- Embark rectangle reduced to 3x3

##### WHAT DOES THIS MEAN ? #####
- A faster DF, ~25% higher FPS.
- Shorter lists of build materials to scroll through.
- Shorter lists of tradegoods for trading.
- Less clutter leftover from invasions and ambushes.
- Easier to color-code your fortress.
- Wide open caverns.
- All vanilla features still work. No worries, it is still the good old Dwarf Fortress.