I am aware, just giving you reasons why it could work. Ofc the game will require changes, for example on heroes with 6 abilities right now. But I do not think it needs complete overhaul which is something I feel people are saying would need to be done. How many has 6 items that needs to be in usable state all the time?
If you think it wouldn't need to be completely redone, you probably haven't thought this through.
The mouse and keyboard controls are integral part of the balancing effort for all the active items and skills, for the size of the maps, for the cooldowns and the channeling times.
Nature prophet being able to instantly move THEN teleport on the other side of the map is not something you can do on controller because you can't move around the map as fast. Blinking and instantly doing an aimed spell would be hard as shit. Being able to do complex commands instantly zipping around the screen is integral for a number of heroes (Storm Spirit).
Chen, Enchantress, Meepo would be unusable (and helm of the dominator would lose its purpose).
Illusion heroes would have less control over their shit, and this includes manta users.
Items that require you to aim at specific targets would have their efficacy reduced because of the controllers being slower than a mouse, thus buffing some heroes with instant reaction spells (like leap) or bkb against shit like blink hex and the like.
Hell, just think how awkward it would be to last hit and deny with a controller.
On a PC, sure. If they went through a developed a decent control scheme and had it out on a console, everyone would be on the same playing field. It could be done it's just a matter of is Valve really willing to rebuild control schemes specific to a console or would they be better off doing a new game entirely?
Specific mechanics and heroes would be impacted differently by the control changes, thus destroying the pretty damn complex balance of the game.
I repeat, it is possible to make a MOBA on consoles that is somewhat closer to PC mobas, but it won't be a direct Dota port, it'd be incredibly different and it would have to be completely rebalanced.
But yeah, we are kind of dragging this whole thing out of topic.