Yeah you're right but since it's only a text change, i mean the main code is already there...i guess scripters could do it too right?
No, scripters deal with npcs. Nothing else really.
Also before making this type of suggestion you should read stuff like https://pokemonrevolution.net/forum/viewtopic.php?f=7&t=35832 so that you don't waste your time typing.
You already run at 1.5x the normal walking speed from handhelds. If you want to go faster get the bike or a mount. I know it sucks indoors, but yea. That's how it is.
The reason you get no experience from the battles is so that people don't just grind exp at the elite four all day. That was the original plan when they were scripted that way.
A shovel won't become an item because to use dig your pokemon has to have a specific amount of happiness. A shovel can't have happiness. If a shovel were implemented it would have to have a durability i.e. The number of times it could be used before breaking/needing recharged
As awesome of an idea as this sounds, it would have to be a little more expensive than a regular Membership to offset the loss of donations on regular membership.