Remaking the terrain changes the map. The reason the map flows so well is the terrain. Over-doing it will change the flow significantly, even if it appears to be minor details. The way you ramp off of things just works on that map.
I am not a fan of wobluda, but if you're going to change it you can't just add a bunch of terrain changes to make it look nicer. That terrain is what makes the map flow. This map has been probably the most played map across the pub/competitive scene for the last 2 years, and should only be modified visually. This means, nothing should have the chance to alter the game play. Terrain is a HUGE dictator of gameplay, and this terrain alters it a lot.
Also, Wobluda is not a map that needs to be remade. It's played a lot. If could be visually better - but visually implies nothing gameplay wise can change. Focus on a map that has potential to be played, rather than a map that's widely liked. Maybe it's the simplistic nature of Wobluda that makes players like it. It's easy to understand, good flow, good amount of jumps, and decent gameplay. A lot of mappers, namely Cusoman, focus so much on appearance that he forgets gameplay. DT was the only one who managed to have both gameplay and detail in his maps - so please don't alter terrain on Wobluda - even though I don't like the map, it'll turn one of the most played maps in DP into something that may not get played. Improving visuals of a map doesn't always imply people will like it more. Work on a map that gets complaints.
FYI - you want a game to grow? Ignore this argument about what the "old players" want. Those old players are off in college, or having families, lacking time for the game. Promote for the majority, and the majority for the last 2 years likes Wobluda as is. I hate the map, but people love it. Leave it as is. The game isn't at a visual level itself to complain about that map.
EDIT: Another example, the dirt in the sewer on JMR screenshot also changes the map. You hit that, you lose speed. That wasn't part of the original. That detail changes the flow. Slightly, sure, but the sewer being ramped on the sides let you ramp up to avoid a line/get a kill. The unintentional stuff like that added gameplay.