with bonus pool at 2750, you need around 3100 pts as an E rank diamond or 2750 S rank to be promoted currently. i'm around 2950 after bonus on both my friends accts(E diamond) and not promoted. am playing master leaguers though. I do believe that, just like chess ratings inflation(if you play chess, look at the number of people rated over 2700 elo today compared to 5 years back), sc2 ratings also inflate over time---more master leaguers over time without necessarily being better. so yes, there's probably a chance of squeezing in without being that good as time passes.
i'm sure you remember promoting from plat to diamond, you start playing diamonds. so similarly if you don't face masters, you aren't close to master league yet. but don't give up. you'll get there one day!
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