Yes you are right.
Btw my app works in two way. Sometimes accept the requests from users (during gaming) but I also need to stream the blockchain (for shop purchases, yes they are not tracked as you mentioned because steemconnect doesn't return with the trx id and block num).

I have the complex solution for streaming blocks, which also detects missed blocks based on previous block, also It retries to preprocess the block when some block is not yet available through the API.

I can agree that all the things depends on the application specification.

I'll take a look at this github repo! Thanks :)

I also invite you to checkout how it works in the https://taverngames.io :)