sprites

11) Roll Your Own Model (needs images for each model and animations enabled or not)
16) Bowser Bomb Dropper (make an image of the bomb)
17) Bomb Platform (needs image for each piece type for each angle)
24) Buzzy Beetle (colors, also for Giant Buzzy Beetle)
25) Spiny (colors only)
40) ? Switch (Newer color and logo mods, also for Red Switch, Brick Block ?/Red Switch and unused ? Switch)
46) Podoboo (colors)
47) Thwomp (color mod, also for Super Thwomp)
53) Quicksand (having a layer like with Water wouldn't be bad)
55) Koopa Troopa (colors, also for Paratroopa)
60) Spike Top (colors, left and right wall placements)
63) Spike Ball (color mod, also for Giant Spike Ball)
78) Bouncy Cloud (colors)
88) Actor Spawner (as ZB said in the thread, same for the Timed Actor Spawner)
95) Hammer Bro (color mod, also for Platform Hammer Bros)
101) Bob-Omb (colors, also for Parabombs)
105) Pokey (colors, fix the bug where you can set a height above 8 if you put a value higher than 15 in the sprite value list below the settings)
107) Message Box Manager (put sprite texture in sprite 152 and remove it from here)
142) Floating Barrel (colors)
182) Event Controlled Door (rotated doors, this for every door sprite)
188) Checkpoint Flag (angles + check discrepancies between images and spritedata)
195) Huckit Crab (color)
198) Grand Goomba (colors)
204) Spiked Ball Spawner (make the sprite a lighter Spike Ball to make it easy to tell where it will spawn)
213) Captain Bowser
219) Stretch Block (colors)
223) Checkered Spring Block (retextures)
224) Jumbo Ray (colors)
228) Stretching Mushroom Platform (colors)
230) Bramball (colors)
231) Wiggling Mushroom Platform (colors)
244) Line God (outlined affected area as Tile God)
250) Electric Line (both left and right)
280) Giant Ice Block (frozen Bob-Omb color)
283) Fuzzy Bear (sprite placement is incorrect)
286) Airship Wooden Gear (color)
291) Parabeetle (colors, same for Heavy Parabeetle)
297) Dragon Coaster (colors)
299) Cannonball/Bob-Omb Cannon (colors)
303) Monty Mole (colors)
305) Lighting - Circle (outline or a thing like Sunlight effect?)
319) Chestnut (various colors and sizes)
335) School of Cheeps (various formation shapes)
341) Giant Turtle Shell (color)
351) Shy Guy (are all the types working ?)
357) Fruit/Cookie (add Cherry for Newer)
359) Lighting - Lamp (???)
374) Effect - Snow/Wind (all the extra colors for Newer + Sandstorm)
387) Bush (colors)
391) Light Block (image for lighting turned off)
398) Gigantic Spike Pillar (outline, for all the directions + the smaller size option)
414) Spike/Gabon (colors)
441) Mushroom Platform (angles)
448) Metal Bar (???)
451) Mouser Despawner
462) Enormous Block with Spikes on Side (outline, badly needed)
463) Effect - Glare (import from Reggie Mod or Newer Sprites)
472) Ice Flow Generator (needs something to help people place it correctly, also for sprite 473)
478) Bowser Switch (colors, also for the bigger counterpart)
480) Morton Spike Pillar
481) Final Boss Rubble Block