BOOM CEO already answered most of these concern in the ACER Predator Podcast. He said that if they can, they want to be a more International team similar to PRX or RRQ (2-3 Indo player + other nationality and comms in english).
But its the same reason why they decided to pick Indo player is because they only got 1 year and 1 chance and need to make it to champs or else they're gonna be kicked from VCT pacific. He think that changing comms now from Indonesian to English is a priviledge of teams who already on riot franchise program because they can "experiment" with comms and player nationality knowing that their spot are always there in VCT Pacific unlike BOOM Esport (GE, T1, RRQ, TLN, etc were all experimenting because their spot are guaranteed by RIOT).
Unless you are suggesting BOOM to drop all their Indonesian player and pick international player despite them being the runner-up for ascension with the current roster -zesbeew, if they do that then BOOM Image would be much much worse than RRQ "4 pinoy 1 Indo" during early franchise announcement lmao.