Saying this as someone deep into certain keyboard related rabbit holes, simply using a mechanical keyboard gets you like 40% of the actual improved typing and gaming experience, picking your preference from one of the handful of readily available switch types goes another 30%, and picking some non-horrific $20-$30 keycaps goes another 20%. The rest is diminishing returns and enjoying it as its own hobby. If you all you want is to move on from your nasty worn out pack-in keyboard, you could get a distinctive improvement for less than the cost of one new AAA game.