I agree. It's not a waste of time.
These efforts won't fix the game in its entirety - the mod author isn't out to do that - but any improvement is still welcome.
This game will be around of years to come. Now if a proper modding support had been a priority for SEGA, Fox and GBX, then this game would seriously be Rockin' some amazing custom content by now. Sadly, this is all we get.
I'll take whatever there is - even if the game itself is ultimately unfixable.
-Windebieste.