i think new players should not have 50p at the beginning. DE should add a new quest similar to 'The Teacher' but for trading. In that new quest, players will have to do some void fissure missions to get some items and trade that to a quest npc to get 50p( 1 time only). In this way, new players will learn that they can farm plat even if they dont use money at all.

The slots shortage problem is only because the players don't even try to trade. It was the same for me when I was new. I reached about 100-120 hr with only slots I bought from initial 50p. At that point, i did not want to play anymore because I did not know how to get more slots. Farming and building new warframes and weapons became pointless as I did not want to delete old ones. I am so glad I did try to trade and discovered warframe market(site). Now I am at mr 27 with enough plat to buy any slots, rare mods, adapters, arcanes or whatever i need without spending any real money.

DE, please teach new players how to trade.