Thoughts on using "la ala" to mean "but"?

Okay okay I know this isn't grammatically correct but hear me out here. I think it would be useful to have a way to say "despite the context of X", to complement "la" which means "in the context of X".

For example:
ona li wile moku la ona li moku -> They were hungry so they ate.

ona li wile moku la ala ona li moku ala -> They didn't eat even though they were hungry.

mi la, moku ni li pona -> the food is good in the context of me -> I think this food is good.

mi la ala, moku ni li pona -> the food is good despite the context of me -> Even I think this food is good!
(the implication being I didn't expect to like it, or I don't usually like this type of food, but I still liked it.)

mi wile musi la mi esun e musi. -> I buy the game in the context of wanting it -> If I like the game I will buy it

mi wile musi la ala mi esun ala e musi. -> I don't buy the game despite the context of wanting it -> Even if I want the game, I won't buy it.

What do you think about this? Is it a dumb idea? Are there situations where it could create confusion? Or should I start doing it?