I would go ahead and get it as the last 3 seasons have had 20 guns and I really don't see aeria lowering that number for future seasons. Plus this is a pretty good season overall.
I just doubt if buying it because the jackpot is already sold out so my probs of getting it are 0/0 (lel). Next mega cap will give me at least 1/20. This is a one time purchase... I only got 2000AP, and Im not thinking of buying more...so thats basically my problem. PS: will buying 1 cap in next seasons give any melee ? Like this one which gives you Kukri Caiman