We don't need more suggestions.   You need a list of three  (really 1) that are priorities.  Focus on something important. 

1. Siege Matching

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One thing that turned me off initially from this game was how insanely priced shard packs are and, honestly how low of a chance you have pulling one. As I returned just recently again it seems they have gotten slightly better, with adding 1 or 2 more Legend shards in the packs along with some voids and a couple blues, which is nice. I mean they offer the 1 mythical shard daily for 5 bucks but offered 6 legends for  like 50 bucks when you could buy the daily and have 10 mythical for the same price... and potentially a better opportunity to get a Legend or even a Mythic Champion. So they still need to  do a little better pack balancing and a more variety. 

Also gear wise best bang for your buck is finishing a pass then spend the 20 bucks at the end once you gotten all 60 reward spots opened up. I'd never buy a gear pack, but I would buy a pack with gear as a side offer lol. Anyways that's my two cents